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1 <?php |
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2 /** |
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3 * Creates common globals for the rest of WordPress |
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4 * |
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5 * Sets $pagenow global which is the current page. Checks |
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6 * for the browser to set which one is currently being used. |
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7 * |
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8 * Detects which user environment WordPress is being used on. |
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9 * Only attempts to check for Apache and IIS. Two web servers |
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10 * with known permalink capability. |
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11 * |
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12 * @package WordPress |
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13 */ |
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14 |
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15 global $pagenow, |
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16 $is_lynx, $is_gecko, $is_winIE, $is_macIE, $is_opera, $is_NS4, $is_safari, $is_chrome, $is_iphone, $is_IE, |
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17 $is_apache, $is_IIS, $is_iis7; |
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18 |
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19 // On which page are we ? |
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20 if ( is_admin() ) { |
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21 // wp-admin pages are checked more carefully |
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22 if ( is_network_admin() ) |
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23 preg_match('#/wp-admin/network/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches); |
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24 elseif ( is_user_admin() ) |
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25 preg_match('#/wp-admin/user/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches); |
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26 else |
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27 preg_match('#/wp-admin/?(.*?)$#i', $_SERVER['PHP_SELF'], $self_matches); |
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28 $pagenow = $self_matches[1]; |
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29 $pagenow = trim($pagenow, '/'); |
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30 $pagenow = preg_replace('#\?.*?$#', '', $pagenow); |
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31 if ( '' === $pagenow || 'index' === $pagenow || 'index.php' === $pagenow ) { |
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32 $pagenow = 'index.php'; |
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33 } else { |
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34 preg_match('#(.*?)(/|$)#', $pagenow, $self_matches); |
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35 $pagenow = strtolower($self_matches[1]); |
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36 if ( '.php' !== substr($pagenow, -4, 4) ) |
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37 $pagenow .= '.php'; // for Options +Multiviews: /wp-admin/themes/index.php (themes.php is queried) |
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38 } |
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39 } else { |
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40 if ( preg_match('#([^/]+\.php)([?/].*?)?$#i', $_SERVER['PHP_SELF'], $self_matches) ) |
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41 $pagenow = strtolower($self_matches[1]); |
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42 else |
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43 $pagenow = 'index.php'; |
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44 } |
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45 unset($self_matches); |
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46 |
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47 // Simple browser detection |
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48 $is_lynx = $is_gecko = $is_winIE = $is_macIE = $is_opera = $is_NS4 = $is_safari = $is_chrome = $is_iphone = false; |
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49 |
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50 if ( isset($_SERVER['HTTP_USER_AGENT']) ) { |
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51 if ( strpos($_SERVER['HTTP_USER_AGENT'], 'Lynx') !== false ) { |
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52 $is_lynx = true; |
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53 } elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'chrome') !== false ) { |
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54 if ( stripos( $_SERVER['HTTP_USER_AGENT'], 'chromeframe' ) !== false ) { |
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55 $is_admin = is_admin(); |
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56 /** |
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57 * Filter whether Google Chrome Frame should be used, if available. |
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58 * |
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59 * @since 3.2.0 |
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60 * |
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61 * @param bool $is_admin Whether to use the Google Chrome Frame. Default is the value of is_admin(). |
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62 */ |
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63 if ( $is_chrome = apply_filters( 'use_google_chrome_frame', $is_admin ) ) |
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64 header( 'X-UA-Compatible: chrome=1' ); |
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65 $is_winIE = ! $is_chrome; |
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66 } else { |
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67 $is_chrome = true; |
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68 } |
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69 } elseif ( stripos($_SERVER['HTTP_USER_AGENT'], 'safari') !== false ) { |
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70 $is_safari = true; |
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71 } elseif ( ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false || strpos($_SERVER['HTTP_USER_AGENT'], 'Trident') !== false ) && strpos($_SERVER['HTTP_USER_AGENT'], 'Win') !== false ) { |
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72 $is_winIE = true; |
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73 } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'MSIE') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mac') !== false ) { |
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74 $is_macIE = true; |
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75 } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Gecko') !== false ) { |
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76 $is_gecko = true; |
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77 } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Opera') !== false ) { |
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78 $is_opera = true; |
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79 } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Nav') !== false && strpos($_SERVER['HTTP_USER_AGENT'], 'Mozilla/4.') !== false ) { |
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80 $is_NS4 = true; |
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81 } |
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82 } |
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83 |
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84 if ( $is_safari && stripos($_SERVER['HTTP_USER_AGENT'], 'mobile') !== false ) |
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85 $is_iphone = true; |
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86 |
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87 $is_IE = ( $is_macIE || $is_winIE ); |
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88 |
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89 // Server detection |
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90 |
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91 /** |
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92 * Whether the server software is Apache or something else |
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93 * @global bool $is_apache |
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94 */ |
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95 $is_apache = (strpos($_SERVER['SERVER_SOFTWARE'], 'Apache') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'LiteSpeed') !== false); |
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96 |
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97 /** |
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98 * Whether the server software is Nginx or something else |
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99 * @global bool $is_nginx |
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100 */ |
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101 $is_nginx = (strpos($_SERVER['SERVER_SOFTWARE'], 'nginx') !== false); |
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102 |
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103 /** |
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104 * Whether the server software is IIS or something else |
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105 * @global bool $is_IIS |
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106 */ |
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107 $is_IIS = !$is_apache && (strpos($_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS') !== false || strpos($_SERVER['SERVER_SOFTWARE'], 'ExpressionDevServer') !== false); |
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108 |
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109 /** |
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110 * Whether the server software is IIS 7.X or greater |
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111 * @global bool $is_iis7 |
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112 */ |
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113 $is_iis7 = $is_IIS && intval( substr( $_SERVER['SERVER_SOFTWARE'], strpos( $_SERVER['SERVER_SOFTWARE'], 'Microsoft-IIS/' ) + 14 ) ) >= 7; |
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114 |
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115 /** |
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116 * Test if the current browser runs on a mobile device (smart phone, tablet, etc.) |
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117 * |
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118 * @return bool true|false |
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119 */ |
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120 function wp_is_mobile() { |
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121 static $is_mobile; |
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122 |
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123 if ( isset($is_mobile) ) |
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124 return $is_mobile; |
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125 |
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126 if ( empty($_SERVER['HTTP_USER_AGENT']) ) { |
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127 $is_mobile = false; |
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128 } elseif ( strpos($_SERVER['HTTP_USER_AGENT'], 'Mobile') !== false // many mobile devices (all iPhone, iPad, etc.) |
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129 || strpos($_SERVER['HTTP_USER_AGENT'], 'Android') !== false |
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130 || strpos($_SERVER['HTTP_USER_AGENT'], 'Silk/') !== false |
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131 || strpos($_SERVER['HTTP_USER_AGENT'], 'Kindle') !== false |
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132 || strpos($_SERVER['HTTP_USER_AGENT'], 'BlackBerry') !== false |
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133 || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mini') !== false |
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134 || strpos($_SERVER['HTTP_USER_AGENT'], 'Opera Mobi') !== false ) { |
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135 $is_mobile = true; |
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136 } else { |
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137 $is_mobile = false; |
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138 } |
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139 |
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140 return $is_mobile; |
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141 } |