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1 <?php |
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2 /** |
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3 * WordPress DB Class |
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4 * |
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5 * Original code from {@link http://php.justinvincent.com Justin Vincent (justin@visunet.ie)} |
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6 * |
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7 * @package WordPress |
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8 * @subpackage Database |
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9 * @since 0.71 |
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10 */ |
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11 |
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12 /** |
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13 * @since 0.71 |
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14 */ |
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15 define( 'EZSQL_VERSION', 'WP1.25' ); |
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16 |
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17 /** |
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18 * @since 0.71 |
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19 */ |
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20 define( 'OBJECT', 'OBJECT', true ); |
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21 |
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22 /** |
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23 * @since 2.5.0 |
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24 */ |
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25 define( 'OBJECT_K', 'OBJECT_K' ); |
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26 |
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27 /** |
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28 * @since 0.71 |
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29 */ |
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30 define( 'ARRAY_A', 'ARRAY_A' ); |
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31 |
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32 /** |
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33 * @since 0.71 |
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34 */ |
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35 define( 'ARRAY_N', 'ARRAY_N' ); |
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36 |
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37 /** |
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38 * WordPress Database Access Abstraction Object |
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39 * |
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40 * It is possible to replace this class with your own |
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41 * by setting the $wpdb global variable in wp-content/db.php |
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42 * file to your class. The wpdb class will still be included, |
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43 * so you can extend it or simply use your own. |
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44 * |
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45 * @link http://codex.wordpress.org/Function_Reference/wpdb_Class |
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46 * |
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47 * @package WordPress |
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48 * @subpackage Database |
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49 * @since 0.71 |
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50 */ |
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51 class wpdb { |
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52 |
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53 /** |
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54 * Whether to show SQL/DB errors |
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55 * |
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56 * @since 0.71 |
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57 * @access private |
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58 * @var bool |
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59 */ |
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60 var $show_errors = false; |
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61 |
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62 /** |
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63 * Whether to suppress errors during the DB bootstrapping. |
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64 * |
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65 * @access private |
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66 * @since 2.5.0 |
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67 * @var bool |
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68 */ |
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69 var $suppress_errors = false; |
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70 |
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71 /** |
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72 * The last error during query. |
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73 * |
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74 * @since 2.5.0 |
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75 * @var string |
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76 */ |
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77 var $last_error = ''; |
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78 |
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79 /** |
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80 * Amount of queries made |
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81 * |
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82 * @since 1.2.0 |
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83 * @access private |
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84 * @var int |
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85 */ |
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86 var $num_queries = 0; |
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87 |
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88 /** |
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89 * Count of rows returned by previous query |
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90 * |
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91 * @since 0.71 |
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92 * @access private |
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93 * @var int |
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94 */ |
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95 var $num_rows = 0; |
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96 |
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97 /** |
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98 * Count of affected rows by previous query |
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99 * |
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100 * @since 0.71 |
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101 * @access private |
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102 * @var int |
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103 */ |
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104 var $rows_affected = 0; |
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105 |
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106 /** |
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107 * The ID generated for an AUTO_INCREMENT column by the previous query (usually INSERT). |
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108 * |
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109 * @since 0.71 |
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110 * @access public |
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111 * @var int |
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112 */ |
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113 var $insert_id = 0; |
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114 |
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115 /** |
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116 * Last query made |
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117 * |
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118 * @since 0.71 |
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119 * @access private |
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120 * @var array |
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121 */ |
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122 var $last_query; |
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123 |
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124 /** |
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125 * Results of the last query made |
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126 * |
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127 * @since 0.71 |
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128 * @access private |
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129 * @var array|null |
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130 */ |
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131 var $last_result; |
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132 |
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133 /** |
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134 * MySQL result, which is either a resource or boolean. |
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135 * |
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136 * @since 0.71 |
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137 * @access protected |
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138 * @var mixed |
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139 */ |
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140 protected $result; |
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141 |
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142 /** |
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143 * Saved info on the table column |
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144 * |
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145 * @since 0.71 |
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146 * @access protected |
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147 * @var array |
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148 */ |
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149 protected $col_info; |
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150 |
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151 /** |
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152 * Saved queries that were executed |
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153 * |
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154 * @since 1.5.0 |
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155 * @access private |
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156 * @var array |
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157 */ |
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158 var $queries; |
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159 |
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160 /** |
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161 * WordPress table prefix |
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162 * |
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163 * You can set this to have multiple WordPress installations |
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164 * in a single database. The second reason is for possible |
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165 * security precautions. |
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166 * |
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167 * @since 2.5.0 |
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168 * @access private |
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169 * @var string |
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170 */ |
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171 var $prefix = ''; |
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172 |
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173 /** |
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174 * Whether the database queries are ready to start executing. |
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175 * |
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176 * @since 2.3.2 |
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177 * @access private |
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178 * @var bool |
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179 */ |
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180 var $ready = false; |
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181 |
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182 /** |
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183 * {@internal Missing Description}} |
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184 * |
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185 * @since 3.0.0 |
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186 * @access public |
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187 * @var int |
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188 */ |
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189 var $blogid = 0; |
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190 |
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191 /** |
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192 * {@internal Missing Description}} |
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193 * |
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194 * @since 3.0.0 |
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195 * @access public |
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196 * @var int |
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197 */ |
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198 var $siteid = 0; |
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199 |
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200 /** |
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201 * List of WordPress per-blog tables |
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202 * |
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203 * @since 2.5.0 |
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204 * @access private |
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205 * @see wpdb::tables() |
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206 * @var array |
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207 */ |
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208 var $tables = array( 'posts', 'comments', 'links', 'options', 'postmeta', |
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209 'terms', 'term_taxonomy', 'term_relationships', 'commentmeta' ); |
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210 |
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211 /** |
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212 * List of deprecated WordPress tables |
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213 * |
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214 * categories, post2cat, and link2cat were deprecated in 2.3.0, db version 5539 |
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215 * |
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216 * @since 2.9.0 |
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217 * @access private |
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218 * @see wpdb::tables() |
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219 * @var array |
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220 */ |
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221 var $old_tables = array( 'categories', 'post2cat', 'link2cat' ); |
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222 |
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223 /** |
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224 * List of WordPress global tables |
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225 * |
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226 * @since 3.0.0 |
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227 * @access private |
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228 * @see wpdb::tables() |
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229 * @var array |
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230 */ |
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231 var $global_tables = array( 'users', 'usermeta' ); |
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232 |
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233 /** |
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234 * List of Multisite global tables |
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235 * |
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236 * @since 3.0.0 |
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237 * @access private |
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238 * @see wpdb::tables() |
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239 * @var array |
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240 */ |
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241 var $ms_global_tables = array( 'blogs', 'signups', 'site', 'sitemeta', |
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242 'sitecategories', 'registration_log', 'blog_versions' ); |
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243 |
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244 /** |
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245 * WordPress Comments table |
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246 * |
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247 * @since 1.5.0 |
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248 * @access public |
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249 * @var string |
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250 */ |
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251 var $comments; |
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252 |
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253 /** |
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254 * WordPress Comment Metadata table |
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255 * |
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256 * @since 2.9.0 |
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257 * @access public |
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258 * @var string |
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259 */ |
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260 var $commentmeta; |
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261 |
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262 /** |
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263 * WordPress Links table |
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264 * |
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265 * @since 1.5.0 |
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266 * @access public |
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267 * @var string |
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268 */ |
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269 var $links; |
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270 |
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271 /** |
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272 * WordPress Options table |
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273 * |
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274 * @since 1.5.0 |
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275 * @access public |
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276 * @var string |
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277 */ |
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278 var $options; |
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279 |
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280 /** |
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281 * WordPress Post Metadata table |
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282 * |
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283 * @since 1.5.0 |
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284 * @access public |
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285 * @var string |
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286 */ |
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287 var $postmeta; |
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288 |
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289 /** |
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290 * WordPress Posts table |
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291 * |
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292 * @since 1.5.0 |
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293 * @access public |
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294 * @var string |
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295 */ |
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296 var $posts; |
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297 |
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298 /** |
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299 * WordPress Terms table |
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300 * |
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301 * @since 2.3.0 |
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302 * @access public |
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303 * @var string |
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304 */ |
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305 var $terms; |
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306 |
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307 /** |
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308 * WordPress Term Relationships table |
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309 * |
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310 * @since 2.3.0 |
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311 * @access public |
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312 * @var string |
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313 */ |
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314 var $term_relationships; |
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315 |
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316 /** |
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317 * WordPress Term Taxonomy table |
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318 * |
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319 * @since 2.3.0 |
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320 * @access public |
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321 * @var string |
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322 */ |
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323 var $term_taxonomy; |
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324 |
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325 /* |
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326 * Global and Multisite tables |
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327 */ |
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328 |
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329 /** |
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330 * WordPress User Metadata table |
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331 * |
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332 * @since 2.3.0 |
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333 * @access public |
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334 * @var string |
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335 */ |
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336 var $usermeta; |
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337 |
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338 /** |
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339 * WordPress Users table |
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340 * |
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341 * @since 1.5.0 |
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342 * @access public |
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343 * @var string |
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344 */ |
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345 var $users; |
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346 |
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347 /** |
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348 * Multisite Blogs table |
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349 * |
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350 * @since 3.0.0 |
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351 * @access public |
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352 * @var string |
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353 */ |
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354 var $blogs; |
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355 |
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356 /** |
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357 * Multisite Blog Versions table |
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358 * |
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359 * @since 3.0.0 |
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360 * @access public |
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361 * @var string |
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362 */ |
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363 var $blog_versions; |
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364 |
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365 /** |
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366 * Multisite Registration Log table |
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367 * |
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368 * @since 3.0.0 |
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369 * @access public |
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370 * @var string |
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371 */ |
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372 var $registration_log; |
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373 |
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374 /** |
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375 * Multisite Signups table |
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376 * |
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377 * @since 3.0.0 |
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378 * @access public |
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379 * @var string |
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380 */ |
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381 var $signups; |
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382 |
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383 /** |
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384 * Multisite Sites table |
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385 * |
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386 * @since 3.0.0 |
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387 * @access public |
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388 * @var string |
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389 */ |
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390 var $site; |
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391 |
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392 /** |
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393 * Multisite Sitewide Terms table |
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394 * |
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395 * @since 3.0.0 |
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396 * @access public |
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397 * @var string |
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398 */ |
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399 var $sitecategories; |
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400 |
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401 /** |
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402 * Multisite Site Metadata table |
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403 * |
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404 * @since 3.0.0 |
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405 * @access public |
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406 * @var string |
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407 */ |
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408 var $sitemeta; |
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409 |
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410 /** |
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411 * Format specifiers for DB columns. Columns not listed here default to %s. Initialized during WP load. |
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412 * |
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413 * Keys are column names, values are format types: 'ID' => '%d' |
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414 * |
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415 * @since 2.8.0 |
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416 * @see wpdb::prepare() |
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417 * @see wpdb::insert() |
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418 * @see wpdb::update() |
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419 * @see wpdb::delete() |
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420 * @see wp_set_wpdb_vars() |
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421 * @access public |
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422 * @var array |
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423 */ |
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424 var $field_types = array(); |
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425 |
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426 /** |
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427 * Database table columns charset |
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428 * |
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429 * @since 2.2.0 |
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430 * @access public |
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431 * @var string |
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432 */ |
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433 var $charset; |
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434 |
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435 /** |
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436 * Database table columns collate |
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437 * |
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438 * @since 2.2.0 |
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439 * @access public |
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440 * @var string |
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441 */ |
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442 var $collate; |
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443 |
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444 /** |
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445 * Database Username |
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446 * |
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447 * @since 2.9.0 |
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448 * @access protected |
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449 * @var string |
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450 */ |
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451 protected $dbuser; |
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452 |
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453 /** |
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454 * Database Password |
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455 * |
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456 * @since 3.1.0 |
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457 * @access protected |
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458 * @var string |
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459 */ |
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460 protected $dbpassword; |
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461 |
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462 /** |
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463 * Database Name |
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464 * |
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465 * @since 3.1.0 |
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466 * @access protected |
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467 * @var string |
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468 */ |
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469 protected $dbname; |
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470 |
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471 /** |
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472 * Database Host |
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473 * |
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474 * @since 3.1.0 |
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475 * @access protected |
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476 * @var string |
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477 */ |
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478 protected $dbhost; |
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479 |
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480 /** |
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481 * Database Handle |
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482 * |
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483 * @since 0.71 |
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484 * @access protected |
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485 * @var string |
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486 */ |
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487 protected $dbh; |
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488 |
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489 /** |
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490 * A textual description of the last query/get_row/get_var call |
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491 * |
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492 * @since 3.0.0 |
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493 * @access public |
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494 * @var string |
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495 */ |
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496 var $func_call; |
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497 |
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498 /** |
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499 * Whether MySQL is used as the database engine. |
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500 * |
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501 * Set in WPDB::db_connect() to true, by default. This is used when checking |
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502 * against the required MySQL version for WordPress. Normally, a replacement |
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503 * database drop-in (db.php) will skip these checks, but setting this to true |
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504 * will force the checks to occur. |
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505 * |
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506 * @since 3.3.0 |
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507 * @access public |
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508 * @var bool |
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509 */ |
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510 public $is_mysql = null; |
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511 |
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512 /** |
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513 * Connects to the database server and selects a database |
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514 * |
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515 * PHP5 style constructor for compatibility with PHP5. Does |
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516 * the actual setting up of the class properties and connection |
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517 * to the database. |
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518 * |
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519 * @link http://core.trac.wordpress.org/ticket/3354 |
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520 * @since 2.0.8 |
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521 * |
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522 * @param string $dbuser MySQL database user |
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523 * @param string $dbpassword MySQL database password |
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524 * @param string $dbname MySQL database name |
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525 * @param string $dbhost MySQL database host |
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526 */ |
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527 function __construct( $dbuser, $dbpassword, $dbname, $dbhost ) { |
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528 register_shutdown_function( array( $this, '__destruct' ) ); |
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529 |
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530 if ( WP_DEBUG && WP_DEBUG_DISPLAY ) |
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531 $this->show_errors(); |
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532 |
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533 $this->init_charset(); |
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534 |
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535 $this->dbuser = $dbuser; |
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536 $this->dbpassword = $dbpassword; |
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537 $this->dbname = $dbname; |
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538 $this->dbhost = $dbhost; |
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539 |
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540 $this->db_connect(); |
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541 } |
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542 |
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543 /** |
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544 * PHP5 style destructor and will run when database object is destroyed. |
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545 * |
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546 * @see wpdb::__construct() |
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547 * @since 2.0.8 |
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548 * @return bool true |
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549 */ |
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550 function __destruct() { |
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551 return true; |
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552 } |
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553 |
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554 /** |
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555 * PHP5 style magic getter, used to lazy-load expensive data. |
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556 * |
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557 * @since 3.5.0 |
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558 * |
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559 * @param string $name The private member to get, and optionally process |
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560 * @return mixed The private member |
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561 */ |
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562 function __get( $name ) { |
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563 if ( 'col_info' == $name ) |
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564 $this->load_col_info(); |
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565 |
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566 return $this->$name; |
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567 } |
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568 |
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569 /** |
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570 * Magic function, for backwards compatibility |
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571 * |
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572 * @since 3.5.0 |
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573 * |
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574 * @param string $name The private member to set |
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575 * @param mixed $value The value to set |
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576 */ |
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577 function __set( $name, $value ) { |
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578 $this->$name = $value; |
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579 } |
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580 |
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581 /** |
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582 * Magic function, for backwards compatibility |
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583 * |
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584 * @since 3.5.0 |
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585 * |
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586 * @param string $name The private member to check |
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587 * |
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588 * @return bool If the member is set or not |
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589 */ |
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590 function __isset( $name ) { |
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591 return isset( $this->$name ); |
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592 } |
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593 |
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594 /** |
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595 * Magic function, for backwards compatibility |
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596 * |
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597 * @since 3.5.0 |
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598 * |
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599 * @param string $name The private member to unset |
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600 */ |
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601 function __unset( $name ) { |
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602 unset( $this->$name ); |
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603 } |
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604 |
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605 /** |
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606 * Set $this->charset and $this->collate |
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607 * |
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608 * @since 3.1.0 |
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609 */ |
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610 function init_charset() { |
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611 if ( function_exists('is_multisite') && is_multisite() ) { |
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612 $this->charset = 'utf8'; |
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613 if ( defined( 'DB_COLLATE' ) && DB_COLLATE ) |
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614 $this->collate = DB_COLLATE; |
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615 else |
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616 $this->collate = 'utf8_general_ci'; |
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617 } elseif ( defined( 'DB_COLLATE' ) ) { |
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618 $this->collate = DB_COLLATE; |
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619 } |
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620 |
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621 if ( defined( 'DB_CHARSET' ) ) |
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622 $this->charset = DB_CHARSET; |
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623 } |
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624 |
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625 /** |
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626 * Sets the connection's character set. |
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627 * |
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628 * @since 3.1.0 |
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629 * |
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630 * @param resource $dbh The resource given by mysql_connect |
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631 * @param string $charset The character set (optional) |
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632 * @param string $collate The collation (optional) |
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633 */ |
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634 function set_charset( $dbh, $charset = null, $collate = null ) { |
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635 if ( ! isset( $charset ) ) |
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636 $charset = $this->charset; |
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637 if ( ! isset( $collate ) ) |
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638 $collate = $this->collate; |
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639 if ( $this->has_cap( 'collation' ) && ! empty( $charset ) ) { |
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640 if ( function_exists( 'mysql_set_charset' ) && $this->has_cap( 'set_charset' ) ) { |
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641 mysql_set_charset( $charset, $dbh ); |
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642 } else { |
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643 $query = $this->prepare( 'SET NAMES %s', $charset ); |
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644 if ( ! empty( $collate ) ) |
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645 $query .= $this->prepare( ' COLLATE %s', $collate ); |
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646 mysql_query( $query, $dbh ); |
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647 } |
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648 } |
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649 } |
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650 |
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651 /** |
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652 * Sets the table prefix for the WordPress tables. |
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653 * |
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654 * @since 2.5.0 |
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655 * |
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656 * @param string $prefix Alphanumeric name for the new prefix. |
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657 * @param bool $set_table_names Optional. Whether the table names, e.g. wpdb::$posts, should be updated or not. |
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658 * @return string|WP_Error Old prefix or WP_Error on error |
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659 */ |
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660 function set_prefix( $prefix, $set_table_names = true ) { |
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661 |
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662 if ( preg_match( '|[^a-z0-9_]|i', $prefix ) ) |
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663 return new WP_Error('invalid_db_prefix', 'Invalid database prefix' ); |
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664 |
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665 $old_prefix = is_multisite() ? '' : $prefix; |
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666 |
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667 if ( isset( $this->base_prefix ) ) |
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668 $old_prefix = $this->base_prefix; |
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669 |
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670 $this->base_prefix = $prefix; |
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671 |
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672 if ( $set_table_names ) { |
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673 foreach ( $this->tables( 'global' ) as $table => $prefixed_table ) |
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674 $this->$table = $prefixed_table; |
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675 |
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676 if ( is_multisite() && empty( $this->blogid ) ) |
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677 return $old_prefix; |
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678 |
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679 $this->prefix = $this->get_blog_prefix(); |
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680 |
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681 foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) |
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682 $this->$table = $prefixed_table; |
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683 |
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684 foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) |
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685 $this->$table = $prefixed_table; |
|
686 } |
|
687 return $old_prefix; |
|
688 } |
|
689 |
|
690 /** |
|
691 * Sets blog id. |
|
692 * |
|
693 * @since 3.0.0 |
|
694 * @access public |
|
695 * @param int $blog_id |
|
696 * @param int $site_id Optional. |
|
697 * @return string previous blog id |
|
698 */ |
|
699 function set_blog_id( $blog_id, $site_id = 0 ) { |
|
700 if ( ! empty( $site_id ) ) |
|
701 $this->siteid = $site_id; |
|
702 |
|
703 $old_blog_id = $this->blogid; |
|
704 $this->blogid = $blog_id; |
|
705 |
|
706 $this->prefix = $this->get_blog_prefix(); |
|
707 |
|
708 foreach ( $this->tables( 'blog' ) as $table => $prefixed_table ) |
|
709 $this->$table = $prefixed_table; |
|
710 |
|
711 foreach ( $this->tables( 'old' ) as $table => $prefixed_table ) |
|
712 $this->$table = $prefixed_table; |
|
713 |
|
714 return $old_blog_id; |
|
715 } |
|
716 |
|
717 /** |
|
718 * Gets blog prefix. |
|
719 * |
|
720 * @uses is_multisite() |
|
721 * @since 3.0.0 |
|
722 * @param int $blog_id Optional. |
|
723 * @return string Blog prefix. |
|
724 */ |
|
725 function get_blog_prefix( $blog_id = null ) { |
|
726 if ( is_multisite() ) { |
|
727 if ( null === $blog_id ) |
|
728 $blog_id = $this->blogid; |
|
729 $blog_id = (int) $blog_id; |
|
730 if ( defined( 'MULTISITE' ) && ( 0 == $blog_id || 1 == $blog_id ) ) |
|
731 return $this->base_prefix; |
|
732 else |
|
733 return $this->base_prefix . $blog_id . '_'; |
|
734 } else { |
|
735 return $this->base_prefix; |
|
736 } |
|
737 } |
|
738 |
|
739 /** |
|
740 * Returns an array of WordPress tables. |
|
741 * |
|
742 * Also allows for the CUSTOM_USER_TABLE and CUSTOM_USER_META_TABLE to |
|
743 * override the WordPress users and usermeta tables that would otherwise |
|
744 * be determined by the prefix. |
|
745 * |
|
746 * The scope argument can take one of the following: |
|
747 * |
|
748 * 'all' - returns 'all' and 'global' tables. No old tables are returned. |
|
749 * 'blog' - returns the blog-level tables for the queried blog. |
|
750 * 'global' - returns the global tables for the installation, returning multisite tables only if running multisite. |
|
751 * 'ms_global' - returns the multisite global tables, regardless if current installation is multisite. |
|
752 * 'old' - returns tables which are deprecated. |
|
753 * |
|
754 * @since 3.0.0 |
|
755 * @uses wpdb::$tables |
|
756 * @uses wpdb::$old_tables |
|
757 * @uses wpdb::$global_tables |
|
758 * @uses wpdb::$ms_global_tables |
|
759 * @uses is_multisite() |
|
760 * |
|
761 * @param string $scope Optional. Can be all, global, ms_global, blog, or old tables. Defaults to all. |
|
762 * @param bool $prefix Optional. Whether to include table prefixes. Default true. If blog |
|
763 * prefix is requested, then the custom users and usermeta tables will be mapped. |
|
764 * @param int $blog_id Optional. The blog_id to prefix. Defaults to wpdb::$blogid. Used only when prefix is requested. |
|
765 * @return array Table names. When a prefix is requested, the key is the unprefixed table name. |
|
766 */ |
|
767 function tables( $scope = 'all', $prefix = true, $blog_id = 0 ) { |
|
768 switch ( $scope ) { |
|
769 case 'all' : |
|
770 $tables = array_merge( $this->global_tables, $this->tables ); |
|
771 if ( is_multisite() ) |
|
772 $tables = array_merge( $tables, $this->ms_global_tables ); |
|
773 break; |
|
774 case 'blog' : |
|
775 $tables = $this->tables; |
|
776 break; |
|
777 case 'global' : |
|
778 $tables = $this->global_tables; |
|
779 if ( is_multisite() ) |
|
780 $tables = array_merge( $tables, $this->ms_global_tables ); |
|
781 break; |
|
782 case 'ms_global' : |
|
783 $tables = $this->ms_global_tables; |
|
784 break; |
|
785 case 'old' : |
|
786 $tables = $this->old_tables; |
|
787 break; |
|
788 default : |
|
789 return array(); |
|
790 break; |
|
791 } |
|
792 |
|
793 if ( $prefix ) { |
|
794 if ( ! $blog_id ) |
|
795 $blog_id = $this->blogid; |
|
796 $blog_prefix = $this->get_blog_prefix( $blog_id ); |
|
797 $base_prefix = $this->base_prefix; |
|
798 $global_tables = array_merge( $this->global_tables, $this->ms_global_tables ); |
|
799 foreach ( $tables as $k => $table ) { |
|
800 if ( in_array( $table, $global_tables ) ) |
|
801 $tables[ $table ] = $base_prefix . $table; |
|
802 else |
|
803 $tables[ $table ] = $blog_prefix . $table; |
|
804 unset( $tables[ $k ] ); |
|
805 } |
|
806 |
|
807 if ( isset( $tables['users'] ) && defined( 'CUSTOM_USER_TABLE' ) ) |
|
808 $tables['users'] = CUSTOM_USER_TABLE; |
|
809 |
|
810 if ( isset( $tables['usermeta'] ) && defined( 'CUSTOM_USER_META_TABLE' ) ) |
|
811 $tables['usermeta'] = CUSTOM_USER_META_TABLE; |
|
812 } |
|
813 |
|
814 return $tables; |
|
815 } |
|
816 |
|
817 /** |
|
818 * Selects a database using the current database connection. |
|
819 * |
|
820 * The database name will be changed based on the current database |
|
821 * connection. On failure, the execution will bail and display an DB error. |
|
822 * |
|
823 * @since 0.71 |
|
824 * |
|
825 * @param string $db MySQL database name |
|
826 * @param resource $dbh Optional link identifier. |
|
827 * @return null Always null. |
|
828 */ |
|
829 function select( $db, $dbh = null ) { |
|
830 if ( is_null($dbh) ) |
|
831 $dbh = $this->dbh; |
|
832 |
|
833 if ( !@mysql_select_db( $db, $dbh ) ) { |
|
834 $this->ready = false; |
|
835 wp_load_translations_early(); |
|
836 $this->bail( sprintf( __( '<h1>Can’t select database</h1> |
|
837 <p>We were able to connect to the database server (which means your username and password is okay) but not able to select the <code>%1$s</code> database.</p> |
|
838 <ul> |
|
839 <li>Are you sure it exists?</li> |
|
840 <li>Does the user <code>%2$s</code> have permission to use the <code>%1$s</code> database?</li> |
|
841 <li>On some systems the name of your database is prefixed with your username, so it would be like <code>username_%1$s</code>. Could that be the problem?</li> |
|
842 </ul> |
|
843 <p>If you don\'t know how to set up a database you should <strong>contact your host</strong>. If all else fails you may find help at the <a href="http://wordpress.org/support/">WordPress Support Forums</a>.</p>' ), htmlspecialchars( $db, ENT_QUOTES ), htmlspecialchars( $this->dbuser, ENT_QUOTES ) ), 'db_select_fail' ); |
|
844 return; |
|
845 } |
|
846 } |
|
847 |
|
848 /** |
|
849 * Do not use, deprecated. |
|
850 * |
|
851 * Use esc_sql() or wpdb::prepare() instead. |
|
852 * |
|
853 * @since 2.8.0 |
|
854 * @deprecated 3.6.0 |
|
855 * @see wpdb::prepare |
|
856 * @see esc_sql() |
|
857 * @access private |
|
858 * |
|
859 * @param string $string |
|
860 * @return string |
|
861 */ |
|
862 function _weak_escape( $string ) { |
|
863 if ( func_num_args() === 1 && function_exists( '_deprecated_function' ) ) |
|
864 _deprecated_function( __METHOD__, '3.6', 'wpdb::prepare() or esc_sql()' ); |
|
865 return addslashes( $string ); |
|
866 } |
|
867 |
|
868 /** |
|
869 * Real escape, using mysql_real_escape_string() |
|
870 * |
|
871 * @see mysql_real_escape_string() |
|
872 * @since 2.8.0 |
|
873 * @access private |
|
874 * |
|
875 * @param string $string to escape |
|
876 * @return string escaped |
|
877 */ |
|
878 function _real_escape( $string ) { |
|
879 if ( $this->dbh ) |
|
880 return mysql_real_escape_string( $string, $this->dbh ); |
|
881 |
|
882 $class = get_class( $this ); |
|
883 _doing_it_wrong( $class, "$class must set a database connection for use with escaping.", E_USER_NOTICE ); |
|
884 return addslashes( $string ); |
|
885 } |
|
886 |
|
887 /** |
|
888 * Escape data. Works on arrays. |
|
889 * |
|
890 * @uses wpdb::_real_escape() |
|
891 * @since 2.8.0 |
|
892 * @access private |
|
893 * |
|
894 * @param string|array $data |
|
895 * @return string|array escaped |
|
896 */ |
|
897 function _escape( $data ) { |
|
898 if ( is_array( $data ) ) { |
|
899 foreach ( $data as $k => $v ) { |
|
900 if ( is_array($v) ) |
|
901 $data[$k] = $this->_escape( $v ); |
|
902 else |
|
903 $data[$k] = $this->_real_escape( $v ); |
|
904 } |
|
905 } else { |
|
906 $data = $this->_real_escape( $data ); |
|
907 } |
|
908 |
|
909 return $data; |
|
910 } |
|
911 |
|
912 /** |
|
913 * Do not use, deprecated. |
|
914 * |
|
915 * Use esc_sql() or wpdb::prepare() instead. |
|
916 * |
|
917 * @since 0.71 |
|
918 * @deprecated 3.6.0 |
|
919 * @see wpdb::prepare() |
|
920 * @see esc_sql() |
|
921 * |
|
922 * @param mixed $data |
|
923 * @return mixed |
|
924 */ |
|
925 function escape( $data ) { |
|
926 if ( func_num_args() === 1 && function_exists( '_deprecated_function' ) ) |
|
927 _deprecated_function( __METHOD__, '3.6', 'wpdb::prepare() or esc_sql()' ); |
|
928 if ( is_array( $data ) ) { |
|
929 foreach ( $data as $k => $v ) { |
|
930 if ( is_array( $v ) ) |
|
931 $data[$k] = $this->escape( $v, 'recursive' ); |
|
932 else |
|
933 $data[$k] = $this->_weak_escape( $v, 'internal' ); |
|
934 } |
|
935 } else { |
|
936 $data = $this->_weak_escape( $data, 'internal' ); |
|
937 } |
|
938 |
|
939 return $data; |
|
940 } |
|
941 |
|
942 /** |
|
943 * Escapes content by reference for insertion into the database, for security |
|
944 * |
|
945 * @uses wpdb::_real_escape() |
|
946 * @since 2.3.0 |
|
947 * @param string $string to escape |
|
948 * @return void |
|
949 */ |
|
950 function escape_by_ref( &$string ) { |
|
951 if ( ! is_float( $string ) ) |
|
952 $string = $this->_real_escape( $string ); |
|
953 } |
|
954 |
|
955 /** |
|
956 * Prepares a SQL query for safe execution. Uses sprintf()-like syntax. |
|
957 * |
|
958 * The following directives can be used in the query format string: |
|
959 * %d (integer) |
|
960 * %f (float) |
|
961 * %s (string) |
|
962 * %% (literal percentage sign - no argument needed) |
|
963 * |
|
964 * All of %d, %f, and %s are to be left unquoted in the query string and they need an argument passed for them. |
|
965 * Literals (%) as parts of the query must be properly written as %%. |
|
966 * |
|
967 * This function only supports a small subset of the sprintf syntax; it only supports %d (integer), %f (float), and %s (string). |
|
968 * Does not support sign, padding, alignment, width or precision specifiers. |
|
969 * Does not support argument numbering/swapping. |
|
970 * |
|
971 * May be called like {@link http://php.net/sprintf sprintf()} or like {@link http://php.net/vsprintf vsprintf()}. |
|
972 * |
|
973 * Both %d and %s should be left unquoted in the query string. |
|
974 * |
|
975 * <code> |
|
976 * wpdb::prepare( "SELECT * FROM `table` WHERE `column` = %s AND `field` = %d", 'foo', 1337 ) |
|
977 * wpdb::prepare( "SELECT DATE_FORMAT(`field`, '%%c') FROM `table` WHERE `column` = %s", 'foo' ); |
|
978 * </code> |
|
979 * |
|
980 * @link http://php.net/sprintf Description of syntax. |
|
981 * @since 2.3.0 |
|
982 * |
|
983 * @param string $query Query statement with sprintf()-like placeholders |
|
984 * @param array|mixed $args The array of variables to substitute into the query's placeholders if being called like |
|
985 * {@link http://php.net/vsprintf vsprintf()}, or the first variable to substitute into the query's placeholders if |
|
986 * being called like {@link http://php.net/sprintf sprintf()}. |
|
987 * @param mixed $args,... further variables to substitute into the query's placeholders if being called like |
|
988 * {@link http://php.net/sprintf sprintf()}. |
|
989 * @return null|false|string Sanitized query string, null if there is no query, false if there is an error and string |
|
990 * if there was something to prepare |
|
991 */ |
|
992 function prepare( $query, $args ) { |
|
993 if ( is_null( $query ) ) |
|
994 return; |
|
995 |
|
996 $args = func_get_args(); |
|
997 array_shift( $args ); |
|
998 // If args were passed as an array (as in vsprintf), move them up |
|
999 if ( isset( $args[0] ) && is_array($args[0]) ) |
|
1000 $args = $args[0]; |
|
1001 $query = str_replace( "'%s'", '%s', $query ); // in case someone mistakenly already singlequoted it |
|
1002 $query = str_replace( '"%s"', '%s', $query ); // doublequote unquoting |
|
1003 $query = preg_replace( '|(?<!%)%f|' , '%F', $query ); // Force floats to be locale unaware |
|
1004 $query = preg_replace( '|(?<!%)%s|', "'%s'", $query ); // quote the strings, avoiding escaped strings like %%s |
|
1005 array_walk( $args, array( $this, 'escape_by_ref' ) ); |
|
1006 return @vsprintf( $query, $args ); |
|
1007 } |
|
1008 |
|
1009 /** |
|
1010 * Print SQL/DB error. |
|
1011 * |
|
1012 * @since 0.71 |
|
1013 * @global array $EZSQL_ERROR Stores error information of query and error string |
|
1014 * |
|
1015 * @param string $str The error to display |
|
1016 * @return bool False if the showing of errors is disabled. |
|
1017 */ |
|
1018 function print_error( $str = '' ) { |
|
1019 global $EZSQL_ERROR; |
|
1020 |
|
1021 if ( !$str ) |
|
1022 $str = mysql_error( $this->dbh ); |
|
1023 $EZSQL_ERROR[] = array( 'query' => $this->last_query, 'error_str' => $str ); |
|
1024 |
|
1025 if ( $this->suppress_errors ) |
|
1026 return false; |
|
1027 |
|
1028 wp_load_translations_early(); |
|
1029 |
|
1030 if ( $caller = $this->get_caller() ) |
|
1031 $error_str = sprintf( __( 'WordPress database error %1$s for query %2$s made by %3$s' ), $str, $this->last_query, $caller ); |
|
1032 else |
|
1033 $error_str = sprintf( __( 'WordPress database error %1$s for query %2$s' ), $str, $this->last_query ); |
|
1034 |
|
1035 error_log( $error_str ); |
|
1036 |
|
1037 // Are we showing errors? |
|
1038 if ( ! $this->show_errors ) |
|
1039 return false; |
|
1040 |
|
1041 // If there is an error then take note of it |
|
1042 if ( is_multisite() ) { |
|
1043 $msg = "WordPress database error: [$str]\n{$this->last_query}\n"; |
|
1044 if ( defined( 'ERRORLOGFILE' ) ) |
|
1045 error_log( $msg, 3, ERRORLOGFILE ); |
|
1046 if ( defined( 'DIEONDBERROR' ) ) |
|
1047 wp_die( $msg ); |
|
1048 } else { |
|
1049 $str = htmlspecialchars( $str, ENT_QUOTES ); |
|
1050 $query = htmlspecialchars( $this->last_query, ENT_QUOTES ); |
|
1051 |
|
1052 print "<div id='error'> |
|
1053 <p class='wpdberror'><strong>WordPress database error:</strong> [$str]<br /> |
|
1054 <code>$query</code></p> |
|
1055 </div>"; |
|
1056 } |
|
1057 } |
|
1058 |
|
1059 /** |
|
1060 * Enables showing of database errors. |
|
1061 * |
|
1062 * This function should be used only to enable showing of errors. |
|
1063 * wpdb::hide_errors() should be used instead for hiding of errors. However, |
|
1064 * this function can be used to enable and disable showing of database |
|
1065 * errors. |
|
1066 * |
|
1067 * @since 0.71 |
|
1068 * @see wpdb::hide_errors() |
|
1069 * |
|
1070 * @param bool $show Whether to show or hide errors |
|
1071 * @return bool Old value for showing errors. |
|
1072 */ |
|
1073 function show_errors( $show = true ) { |
|
1074 $errors = $this->show_errors; |
|
1075 $this->show_errors = $show; |
|
1076 return $errors; |
|
1077 } |
|
1078 |
|
1079 /** |
|
1080 * Disables showing of database errors. |
|
1081 * |
|
1082 * By default database errors are not shown. |
|
1083 * |
|
1084 * @since 0.71 |
|
1085 * @see wpdb::show_errors() |
|
1086 * |
|
1087 * @return bool Whether showing of errors was active |
|
1088 */ |
|
1089 function hide_errors() { |
|
1090 $show = $this->show_errors; |
|
1091 $this->show_errors = false; |
|
1092 return $show; |
|
1093 } |
|
1094 |
|
1095 /** |
|
1096 * Whether to suppress database errors. |
|
1097 * |
|
1098 * By default database errors are suppressed, with a simple |
|
1099 * call to this function they can be enabled. |
|
1100 * |
|
1101 * @since 2.5.0 |
|
1102 * @see wpdb::hide_errors() |
|
1103 * @param bool $suppress Optional. New value. Defaults to true. |
|
1104 * @return bool Old value |
|
1105 */ |
|
1106 function suppress_errors( $suppress = true ) { |
|
1107 $errors = $this->suppress_errors; |
|
1108 $this->suppress_errors = (bool) $suppress; |
|
1109 return $errors; |
|
1110 } |
|
1111 |
|
1112 /** |
|
1113 * Kill cached query results. |
|
1114 * |
|
1115 * @since 0.71 |
|
1116 * @return void |
|
1117 */ |
|
1118 function flush() { |
|
1119 $this->last_result = array(); |
|
1120 $this->col_info = null; |
|
1121 $this->last_query = null; |
|
1122 $this->rows_affected = $this->num_rows = 0; |
|
1123 $this->last_error = ''; |
|
1124 |
|
1125 if ( is_resource( $this->result ) ) |
|
1126 mysql_free_result( $this->result ); |
|
1127 } |
|
1128 |
|
1129 /** |
|
1130 * Connect to and select database |
|
1131 * |
|
1132 * @since 3.0.0 |
|
1133 */ |
|
1134 function db_connect() { |
|
1135 |
|
1136 $this->is_mysql = true; |
|
1137 |
|
1138 $new_link = defined( 'MYSQL_NEW_LINK' ) ? MYSQL_NEW_LINK : true; |
|
1139 $client_flags = defined( 'MYSQL_CLIENT_FLAGS' ) ? MYSQL_CLIENT_FLAGS : 0; |
|
1140 |
|
1141 if ( WP_DEBUG ) { |
|
1142 $this->dbh = mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, $new_link, $client_flags ); |
|
1143 } else { |
|
1144 $this->dbh = @mysql_connect( $this->dbhost, $this->dbuser, $this->dbpassword, $new_link, $client_flags ); |
|
1145 } |
|
1146 |
|
1147 if ( !$this->dbh ) { |
|
1148 wp_load_translations_early(); |
|
1149 $this->bail( sprintf( __( " |
|
1150 <h1>Error establishing a database connection</h1> |
|
1151 <p>This either means that the username and password information in your <code>wp-config.php</code> file is incorrect or we can't contact the database server at <code>%s</code>. This could mean your host's database server is down.</p> |
|
1152 <ul> |
|
1153 <li>Are you sure you have the correct username and password?</li> |
|
1154 <li>Are you sure that you have typed the correct hostname?</li> |
|
1155 <li>Are you sure that the database server is running?</li> |
|
1156 </ul> |
|
1157 <p>If you're unsure what these terms mean you should probably contact your host. If you still need help you can always visit the <a href='http://wordpress.org/support/'>WordPress Support Forums</a>.</p> |
|
1158 " ), htmlspecialchars( $this->dbhost, ENT_QUOTES ) ), 'db_connect_fail' ); |
|
1159 |
|
1160 return; |
|
1161 } |
|
1162 |
|
1163 $this->set_charset( $this->dbh ); |
|
1164 |
|
1165 $this->ready = true; |
|
1166 |
|
1167 $this->select( $this->dbname, $this->dbh ); |
|
1168 } |
|
1169 |
|
1170 /** |
|
1171 * Perform a MySQL database query, using current database connection. |
|
1172 * |
|
1173 * More information can be found on the codex page. |
|
1174 * |
|
1175 * @since 0.71 |
|
1176 * |
|
1177 * @param string $query Database query |
|
1178 * @return int|false Number of rows affected/selected or false on error |
|
1179 */ |
|
1180 function query( $query ) { |
|
1181 if ( ! $this->ready ) |
|
1182 return false; |
|
1183 /** |
|
1184 * Filter the database query. |
|
1185 * |
|
1186 * Some queries are made before the plugins have been loaded, and thus cannot be filtered with this method. |
|
1187 * |
|
1188 * @since 2.1.0 |
|
1189 * @param string $query Database query. |
|
1190 */ |
|
1191 $query = apply_filters( 'query', $query ); |
|
1192 |
|
1193 $return_val = 0; |
|
1194 $this->flush(); |
|
1195 |
|
1196 // Log how the function was called |
|
1197 $this->func_call = "\$db->query(\"$query\")"; |
|
1198 |
|
1199 // Keep track of the last query for debug.. |
|
1200 $this->last_query = $query; |
|
1201 |
|
1202 if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) |
|
1203 $this->timer_start(); |
|
1204 |
|
1205 $this->result = @mysql_query( $query, $this->dbh ); |
|
1206 $this->num_queries++; |
|
1207 |
|
1208 if ( defined( 'SAVEQUERIES' ) && SAVEQUERIES ) |
|
1209 $this->queries[] = array( $query, $this->timer_stop(), $this->get_caller() ); |
|
1210 |
|
1211 // If there is an error then take note of it.. |
|
1212 if ( $this->last_error = mysql_error( $this->dbh ) ) { |
|
1213 // Clear insert_id on a subsequent failed insert. |
|
1214 if ( $this->insert_id && preg_match( '/^\s*(insert|replace)\s/i', $query ) ) |
|
1215 $this->insert_id = 0; |
|
1216 |
|
1217 $this->print_error(); |
|
1218 return false; |
|
1219 } |
|
1220 |
|
1221 if ( preg_match( '/^\s*(create|alter|truncate|drop)\s/i', $query ) ) { |
|
1222 $return_val = $this->result; |
|
1223 } elseif ( preg_match( '/^\s*(insert|delete|update|replace)\s/i', $query ) ) { |
|
1224 $this->rows_affected = mysql_affected_rows( $this->dbh ); |
|
1225 // Take note of the insert_id |
|
1226 if ( preg_match( '/^\s*(insert|replace)\s/i', $query ) ) { |
|
1227 $this->insert_id = mysql_insert_id($this->dbh); |
|
1228 } |
|
1229 // Return number of rows affected |
|
1230 $return_val = $this->rows_affected; |
|
1231 } else { |
|
1232 $num_rows = 0; |
|
1233 while ( $row = @mysql_fetch_object( $this->result ) ) { |
|
1234 $this->last_result[$num_rows] = $row; |
|
1235 $num_rows++; |
|
1236 } |
|
1237 |
|
1238 // Log number of rows the query returned |
|
1239 // and return number of rows selected |
|
1240 $this->num_rows = $num_rows; |
|
1241 $return_val = $num_rows; |
|
1242 } |
|
1243 |
|
1244 return $return_val; |
|
1245 } |
|
1246 |
|
1247 /** |
|
1248 * Insert a row into a table. |
|
1249 * |
|
1250 * <code> |
|
1251 * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) |
|
1252 * wpdb::insert( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) |
|
1253 * </code> |
|
1254 * |
|
1255 * @since 2.5.0 |
|
1256 * @see wpdb::prepare() |
|
1257 * @see wpdb::$field_types |
|
1258 * @see wp_set_wpdb_vars() |
|
1259 * |
|
1260 * @param string $table table name |
|
1261 * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). |
|
1262 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. |
|
1263 * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. |
|
1264 * @return int|false The number of rows inserted, or false on error. |
|
1265 */ |
|
1266 function insert( $table, $data, $format = null ) { |
|
1267 return $this->_insert_replace_helper( $table, $data, $format, 'INSERT' ); |
|
1268 } |
|
1269 |
|
1270 /** |
|
1271 * Replace a row into a table. |
|
1272 * |
|
1273 * <code> |
|
1274 * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 'bar' ) ) |
|
1275 * wpdb::replace( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( '%s', '%d' ) ) |
|
1276 * </code> |
|
1277 * |
|
1278 * @since 3.0.0 |
|
1279 * @see wpdb::prepare() |
|
1280 * @see wpdb::$field_types |
|
1281 * @see wp_set_wpdb_vars() |
|
1282 * |
|
1283 * @param string $table table name |
|
1284 * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). |
|
1285 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. |
|
1286 * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. |
|
1287 * @return int|false The number of rows affected, or false on error. |
|
1288 */ |
|
1289 function replace( $table, $data, $format = null ) { |
|
1290 return $this->_insert_replace_helper( $table, $data, $format, 'REPLACE' ); |
|
1291 } |
|
1292 |
|
1293 /** |
|
1294 * Helper function for insert and replace. |
|
1295 * |
|
1296 * Runs an insert or replace query based on $type argument. |
|
1297 * |
|
1298 * @access private |
|
1299 * @since 3.0.0 |
|
1300 * @see wpdb::prepare() |
|
1301 * @see wpdb::$field_types |
|
1302 * @see wp_set_wpdb_vars() |
|
1303 * |
|
1304 * @param string $table table name |
|
1305 * @param array $data Data to insert (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). |
|
1306 * @param array|string $format Optional. An array of formats to be mapped to each of the value in $data. If string, that format will be used for all of the values in $data. |
|
1307 * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. |
|
1308 * @param string $type Optional. What type of operation is this? INSERT or REPLACE. Defaults to INSERT. |
|
1309 * @return int|false The number of rows affected, or false on error. |
|
1310 */ |
|
1311 function _insert_replace_helper( $table, $data, $format = null, $type = 'INSERT' ) { |
|
1312 if ( ! in_array( strtoupper( $type ), array( 'REPLACE', 'INSERT' ) ) ) |
|
1313 return false; |
|
1314 $this->insert_id = 0; |
|
1315 $formats = $format = (array) $format; |
|
1316 $fields = array_keys( $data ); |
|
1317 $formatted_fields = array(); |
|
1318 foreach ( $fields as $field ) { |
|
1319 if ( !empty( $format ) ) |
|
1320 $form = ( $form = array_shift( $formats ) ) ? $form : $format[0]; |
|
1321 elseif ( isset( $this->field_types[$field] ) ) |
|
1322 $form = $this->field_types[$field]; |
|
1323 else |
|
1324 $form = '%s'; |
|
1325 $formatted_fields[] = $form; |
|
1326 } |
|
1327 $sql = "{$type} INTO `$table` (`" . implode( '`,`', $fields ) . "`) VALUES (" . implode( ",", $formatted_fields ) . ")"; |
|
1328 return $this->query( $this->prepare( $sql, $data ) ); |
|
1329 } |
|
1330 |
|
1331 /** |
|
1332 * Update a row in the table |
|
1333 * |
|
1334 * <code> |
|
1335 * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 'bar' ), array( 'ID' => 1 ) ) |
|
1336 * wpdb::update( 'table', array( 'column' => 'foo', 'field' => 1337 ), array( 'ID' => 1 ), array( '%s', '%d' ), array( '%d' ) ) |
|
1337 * </code> |
|
1338 * |
|
1339 * @since 2.5.0 |
|
1340 * @see wpdb::prepare() |
|
1341 * @see wpdb::$field_types |
|
1342 * @see wp_set_wpdb_vars() |
|
1343 * |
|
1344 * @param string $table table name |
|
1345 * @param array $data Data to update (in column => value pairs). Both $data columns and $data values should be "raw" (neither should be SQL escaped). |
|
1346 * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw". |
|
1347 * @param array|string $format Optional. An array of formats to be mapped to each of the values in $data. If string, that format will be used for all of the values in $data. |
|
1348 * A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $data will be treated as strings unless otherwise specified in wpdb::$field_types. |
|
1349 * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings. |
|
1350 * @return int|false The number of rows updated, or false on error. |
|
1351 */ |
|
1352 function update( $table, $data, $where, $format = null, $where_format = null ) { |
|
1353 if ( ! is_array( $data ) || ! is_array( $where ) ) |
|
1354 return false; |
|
1355 |
|
1356 $formats = $format = (array) $format; |
|
1357 $bits = $wheres = array(); |
|
1358 foreach ( (array) array_keys( $data ) as $field ) { |
|
1359 if ( !empty( $format ) ) |
|
1360 $form = ( $form = array_shift( $formats ) ) ? $form : $format[0]; |
|
1361 elseif ( isset($this->field_types[$field]) ) |
|
1362 $form = $this->field_types[$field]; |
|
1363 else |
|
1364 $form = '%s'; |
|
1365 $bits[] = "`$field` = {$form}"; |
|
1366 } |
|
1367 |
|
1368 $where_formats = $where_format = (array) $where_format; |
|
1369 foreach ( (array) array_keys( $where ) as $field ) { |
|
1370 if ( !empty( $where_format ) ) |
|
1371 $form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0]; |
|
1372 elseif ( isset( $this->field_types[$field] ) ) |
|
1373 $form = $this->field_types[$field]; |
|
1374 else |
|
1375 $form = '%s'; |
|
1376 $wheres[] = "`$field` = {$form}"; |
|
1377 } |
|
1378 |
|
1379 $sql = "UPDATE `$table` SET " . implode( ', ', $bits ) . ' WHERE ' . implode( ' AND ', $wheres ); |
|
1380 return $this->query( $this->prepare( $sql, array_merge( array_values( $data ), array_values( $where ) ) ) ); |
|
1381 } |
|
1382 |
|
1383 /** |
|
1384 * Delete a row in the table |
|
1385 * |
|
1386 * <code> |
|
1387 * wpdb::delete( 'table', array( 'ID' => 1 ) ) |
|
1388 * wpdb::delete( 'table', array( 'ID' => 1 ), array( '%d' ) ) |
|
1389 * </code> |
|
1390 * |
|
1391 * @since 3.4.0 |
|
1392 * @see wpdb::prepare() |
|
1393 * @see wpdb::$field_types |
|
1394 * @see wp_set_wpdb_vars() |
|
1395 * |
|
1396 * @param string $table table name |
|
1397 * @param array $where A named array of WHERE clauses (in column => value pairs). Multiple clauses will be joined with ANDs. Both $where columns and $where values should be "raw". |
|
1398 * @param array|string $where_format Optional. An array of formats to be mapped to each of the values in $where. If string, that format will be used for all of the items in $where. A format is one of '%d', '%f', '%s' (integer, float, string). If omitted, all values in $where will be treated as strings unless otherwise specified in wpdb::$field_types. |
|
1399 * @return int|false The number of rows updated, or false on error. |
|
1400 */ |
|
1401 function delete( $table, $where, $where_format = null ) { |
|
1402 if ( ! is_array( $where ) ) |
|
1403 return false; |
|
1404 |
|
1405 $bits = $wheres = array(); |
|
1406 |
|
1407 $where_formats = $where_format = (array) $where_format; |
|
1408 |
|
1409 foreach ( array_keys( $where ) as $field ) { |
|
1410 if ( !empty( $where_format ) ) { |
|
1411 $form = ( $form = array_shift( $where_formats ) ) ? $form : $where_format[0]; |
|
1412 } elseif ( isset( $this->field_types[ $field ] ) ) { |
|
1413 $form = $this->field_types[ $field ]; |
|
1414 } else { |
|
1415 $form = '%s'; |
|
1416 } |
|
1417 |
|
1418 $wheres[] = "$field = $form"; |
|
1419 } |
|
1420 |
|
1421 $sql = "DELETE FROM $table WHERE " . implode( ' AND ', $wheres ); |
|
1422 return $this->query( $this->prepare( $sql, $where ) ); |
|
1423 } |
|
1424 |
|
1425 |
|
1426 /** |
|
1427 * Retrieve one variable from the database. |
|
1428 * |
|
1429 * Executes a SQL query and returns the value from the SQL result. |
|
1430 * If the SQL result contains more than one column and/or more than one row, this function returns the value in the column and row specified. |
|
1431 * If $query is null, this function returns the value in the specified column and row from the previous SQL result. |
|
1432 * |
|
1433 * @since 0.71 |
|
1434 * |
|
1435 * @param string|null $query Optional. SQL query. Defaults to null, use the result from the previous query. |
|
1436 * @param int $x Optional. Column of value to return. Indexed from 0. |
|
1437 * @param int $y Optional. Row of value to return. Indexed from 0. |
|
1438 * @return string|null Database query result (as string), or null on failure |
|
1439 */ |
|
1440 function get_var( $query = null, $x = 0, $y = 0 ) { |
|
1441 $this->func_call = "\$db->get_var(\"$query\", $x, $y)"; |
|
1442 if ( $query ) |
|
1443 $this->query( $query ); |
|
1444 |
|
1445 // Extract var out of cached results based x,y vals |
|
1446 if ( !empty( $this->last_result[$y] ) ) { |
|
1447 $values = array_values( get_object_vars( $this->last_result[$y] ) ); |
|
1448 } |
|
1449 |
|
1450 // If there is a value return it else return null |
|
1451 return ( isset( $values[$x] ) && $values[$x] !== '' ) ? $values[$x] : null; |
|
1452 } |
|
1453 |
|
1454 /** |
|
1455 * Retrieve one row from the database. |
|
1456 * |
|
1457 * Executes a SQL query and returns the row from the SQL result. |
|
1458 * |
|
1459 * @since 0.71 |
|
1460 * |
|
1461 * @param string|null $query SQL query. |
|
1462 * @param string $output Optional. one of ARRAY_A | ARRAY_N | OBJECT constants. Return an associative array (column => value, ...), |
|
1463 * a numerically indexed array (0 => value, ...) or an object ( ->column = value ), respectively. |
|
1464 * @param int $y Optional. Row to return. Indexed from 0. |
|
1465 * @return mixed Database query result in format specified by $output or null on failure |
|
1466 */ |
|
1467 function get_row( $query = null, $output = OBJECT, $y = 0 ) { |
|
1468 $this->func_call = "\$db->get_row(\"$query\",$output,$y)"; |
|
1469 if ( $query ) |
|
1470 $this->query( $query ); |
|
1471 else |
|
1472 return null; |
|
1473 |
|
1474 if ( !isset( $this->last_result[$y] ) ) |
|
1475 return null; |
|
1476 |
|
1477 if ( $output == OBJECT ) { |
|
1478 return $this->last_result[$y] ? $this->last_result[$y] : null; |
|
1479 } elseif ( $output == ARRAY_A ) { |
|
1480 return $this->last_result[$y] ? get_object_vars( $this->last_result[$y] ) : null; |
|
1481 } elseif ( $output == ARRAY_N ) { |
|
1482 return $this->last_result[$y] ? array_values( get_object_vars( $this->last_result[$y] ) ) : null; |
|
1483 } else { |
|
1484 $this->print_error( " \$db->get_row(string query, output type, int offset) -- Output type must be one of: OBJECT, ARRAY_A, ARRAY_N" ); |
|
1485 } |
|
1486 } |
|
1487 |
|
1488 /** |
|
1489 * Retrieve one column from the database. |
|
1490 * |
|
1491 * Executes a SQL query and returns the column from the SQL result. |
|
1492 * If the SQL result contains more than one column, this function returns the column specified. |
|
1493 * If $query is null, this function returns the specified column from the previous SQL result. |
|
1494 * |
|
1495 * @since 0.71 |
|
1496 * |
|
1497 * @param string|null $query Optional. SQL query. Defaults to previous query. |
|
1498 * @param int $x Optional. Column to return. Indexed from 0. |
|
1499 * @return array Database query result. Array indexed from 0 by SQL result row number. |
|
1500 */ |
|
1501 function get_col( $query = null , $x = 0 ) { |
|
1502 if ( $query ) |
|
1503 $this->query( $query ); |
|
1504 |
|
1505 $new_array = array(); |
|
1506 // Extract the column values |
|
1507 for ( $i = 0, $j = count( $this->last_result ); $i < $j; $i++ ) { |
|
1508 $new_array[$i] = $this->get_var( null, $x, $i ); |
|
1509 } |
|
1510 return $new_array; |
|
1511 } |
|
1512 |
|
1513 /** |
|
1514 * Retrieve an entire SQL result set from the database (i.e., many rows) |
|
1515 * |
|
1516 * Executes a SQL query and returns the entire SQL result. |
|
1517 * |
|
1518 * @since 0.71 |
|
1519 * |
|
1520 * @param string $query SQL query. |
|
1521 * @param string $output Optional. Any of ARRAY_A | ARRAY_N | OBJECT | OBJECT_K constants. With one of the first three, return an array of rows indexed from 0 by SQL result row number. |
|
1522 * Each row is an associative array (column => value, ...), a numerically indexed array (0 => value, ...), or an object. ( ->column = value ), respectively. |
|
1523 * With OBJECT_K, return an associative array of row objects keyed by the value of each row's first column's value. Duplicate keys are discarded. |
|
1524 * @return mixed Database query results |
|
1525 */ |
|
1526 function get_results( $query = null, $output = OBJECT ) { |
|
1527 $this->func_call = "\$db->get_results(\"$query\", $output)"; |
|
1528 |
|
1529 if ( $query ) |
|
1530 $this->query( $query ); |
|
1531 else |
|
1532 return null; |
|
1533 |
|
1534 $new_array = array(); |
|
1535 if ( $output == OBJECT ) { |
|
1536 // Return an integer-keyed array of row objects |
|
1537 return $this->last_result; |
|
1538 } elseif ( $output == OBJECT_K ) { |
|
1539 // Return an array of row objects with keys from column 1 |
|
1540 // (Duplicates are discarded) |
|
1541 foreach ( $this->last_result as $row ) { |
|
1542 $var_by_ref = get_object_vars( $row ); |
|
1543 $key = array_shift( $var_by_ref ); |
|
1544 if ( ! isset( $new_array[ $key ] ) ) |
|
1545 $new_array[ $key ] = $row; |
|
1546 } |
|
1547 return $new_array; |
|
1548 } elseif ( $output == ARRAY_A || $output == ARRAY_N ) { |
|
1549 // Return an integer-keyed array of... |
|
1550 if ( $this->last_result ) { |
|
1551 foreach( (array) $this->last_result as $row ) { |
|
1552 if ( $output == ARRAY_N ) { |
|
1553 // ...integer-keyed row arrays |
|
1554 $new_array[] = array_values( get_object_vars( $row ) ); |
|
1555 } else { |
|
1556 // ...column name-keyed row arrays |
|
1557 $new_array[] = get_object_vars( $row ); |
|
1558 } |
|
1559 } |
|
1560 } |
|
1561 return $new_array; |
|
1562 } |
|
1563 return null; |
|
1564 } |
|
1565 |
|
1566 /** |
|
1567 * Load the column metadata from the last query. |
|
1568 * |
|
1569 * @since 3.5.0 |
|
1570 * |
|
1571 * @access protected |
|
1572 */ |
|
1573 protected function load_col_info() { |
|
1574 if ( $this->col_info ) |
|
1575 return; |
|
1576 |
|
1577 for ( $i = 0; $i < @mysql_num_fields( $this->result ); $i++ ) { |
|
1578 $this->col_info[ $i ] = @mysql_fetch_field( $this->result, $i ); |
|
1579 } |
|
1580 } |
|
1581 |
|
1582 /** |
|
1583 * Retrieve column metadata from the last query. |
|
1584 * |
|
1585 * @since 0.71 |
|
1586 * |
|
1587 * @param string $info_type Optional. Type one of name, table, def, max_length, not_null, primary_key, multiple_key, unique_key, numeric, blob, type, unsigned, zerofill |
|
1588 * @param int $col_offset Optional. 0: col name. 1: which table the col's in. 2: col's max length. 3: if the col is numeric. 4: col's type |
|
1589 * @return mixed Column Results |
|
1590 */ |
|
1591 function get_col_info( $info_type = 'name', $col_offset = -1 ) { |
|
1592 $this->load_col_info(); |
|
1593 |
|
1594 if ( $this->col_info ) { |
|
1595 if ( $col_offset == -1 ) { |
|
1596 $i = 0; |
|
1597 $new_array = array(); |
|
1598 foreach( (array) $this->col_info as $col ) { |
|
1599 $new_array[$i] = $col->{$info_type}; |
|
1600 $i++; |
|
1601 } |
|
1602 return $new_array; |
|
1603 } else { |
|
1604 return $this->col_info[$col_offset]->{$info_type}; |
|
1605 } |
|
1606 } |
|
1607 } |
|
1608 |
|
1609 /** |
|
1610 * Starts the timer, for debugging purposes. |
|
1611 * |
|
1612 * @since 1.5.0 |
|
1613 * |
|
1614 * @return true |
|
1615 */ |
|
1616 function timer_start() { |
|
1617 $this->time_start = microtime( true ); |
|
1618 return true; |
|
1619 } |
|
1620 |
|
1621 /** |
|
1622 * Stops the debugging timer. |
|
1623 * |
|
1624 * @since 1.5.0 |
|
1625 * |
|
1626 * @return float Total time spent on the query, in seconds |
|
1627 */ |
|
1628 function timer_stop() { |
|
1629 return ( microtime( true ) - $this->time_start ); |
|
1630 } |
|
1631 |
|
1632 /** |
|
1633 * Wraps errors in a nice header and footer and dies. |
|
1634 * |
|
1635 * Will not die if wpdb::$show_errors is false. |
|
1636 * |
|
1637 * @since 1.5.0 |
|
1638 * |
|
1639 * @param string $message The Error message |
|
1640 * @param string $error_code Optional. A Computer readable string to identify the error. |
|
1641 * @return false|void |
|
1642 */ |
|
1643 function bail( $message, $error_code = '500' ) { |
|
1644 if ( !$this->show_errors ) { |
|
1645 if ( class_exists( 'WP_Error' ) ) |
|
1646 $this->error = new WP_Error($error_code, $message); |
|
1647 else |
|
1648 $this->error = $message; |
|
1649 return false; |
|
1650 } |
|
1651 wp_die($message); |
|
1652 } |
|
1653 |
|
1654 /** |
|
1655 * Whether MySQL database is at least the required minimum version. |
|
1656 * |
|
1657 * @since 2.5.0 |
|
1658 * @uses $wp_version |
|
1659 * @uses $required_mysql_version |
|
1660 * |
|
1661 * @return WP_Error |
|
1662 */ |
|
1663 function check_database_version() { |
|
1664 global $wp_version, $required_mysql_version; |
|
1665 // Make sure the server has the required MySQL version |
|
1666 if ( version_compare($this->db_version(), $required_mysql_version, '<') ) |
|
1667 return new WP_Error('database_version', sprintf( __( '<strong>ERROR</strong>: WordPress %1$s requires MySQL %2$s or higher' ), $wp_version, $required_mysql_version )); |
|
1668 } |
|
1669 |
|
1670 /** |
|
1671 * Whether the database supports collation. |
|
1672 * |
|
1673 * Called when WordPress is generating the table scheme. |
|
1674 * |
|
1675 * @since 2.5.0 |
|
1676 * @deprecated 3.5.0 |
|
1677 * @deprecated Use wpdb::has_cap( 'collation' ) |
|
1678 * |
|
1679 * @return bool True if collation is supported, false if version does not |
|
1680 */ |
|
1681 function supports_collation() { |
|
1682 _deprecated_function( __FUNCTION__, '3.5', 'wpdb::has_cap( \'collation\' )' ); |
|
1683 return $this->has_cap( 'collation' ); |
|
1684 } |
|
1685 |
|
1686 /** |
|
1687 * The database character collate. |
|
1688 * |
|
1689 * @since 3.5.0 |
|
1690 * |
|
1691 * @return string The database character collate. |
|
1692 */ |
|
1693 public function get_charset_collate() { |
|
1694 $charset_collate = ''; |
|
1695 |
|
1696 if ( ! empty( $this->charset ) ) |
|
1697 $charset_collate = "DEFAULT CHARACTER SET $this->charset"; |
|
1698 if ( ! empty( $this->collate ) ) |
|
1699 $charset_collate .= " COLLATE $this->collate"; |
|
1700 |
|
1701 return $charset_collate; |
|
1702 } |
|
1703 |
|
1704 /** |
|
1705 * Determine if a database supports a particular feature. |
|
1706 * |
|
1707 * @since 2.7.0 |
|
1708 * @see wpdb::db_version() |
|
1709 * |
|
1710 * @param string $db_cap The feature to check for. |
|
1711 * @return bool |
|
1712 */ |
|
1713 function has_cap( $db_cap ) { |
|
1714 $version = $this->db_version(); |
|
1715 |
|
1716 switch ( strtolower( $db_cap ) ) { |
|
1717 case 'collation' : // @since 2.5.0 |
|
1718 case 'group_concat' : // @since 2.7.0 |
|
1719 case 'subqueries' : // @since 2.7.0 |
|
1720 return version_compare( $version, '4.1', '>=' ); |
|
1721 case 'set_charset' : |
|
1722 return version_compare( $version, '5.0.7', '>=' ); |
|
1723 }; |
|
1724 |
|
1725 return false; |
|
1726 } |
|
1727 |
|
1728 /** |
|
1729 * Retrieve the name of the function that called wpdb. |
|
1730 * |
|
1731 * Searches up the list of functions until it reaches |
|
1732 * the one that would most logically had called this method. |
|
1733 * |
|
1734 * @since 2.5.0 |
|
1735 * |
|
1736 * @return string The name of the calling function |
|
1737 */ |
|
1738 function get_caller() { |
|
1739 return wp_debug_backtrace_summary( __CLASS__ ); |
|
1740 } |
|
1741 |
|
1742 /** |
|
1743 * The database version number. |
|
1744 * |
|
1745 * @since 2.7.0 |
|
1746 * |
|
1747 * @return false|string false on failure, version number on success |
|
1748 */ |
|
1749 function db_version() { |
|
1750 return preg_replace( '/[^0-9.].*/', '', mysql_get_server_info( $this->dbh ) ); |
|
1751 } |
|
1752 } |