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1 <?php |
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2 /** |
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3 * Feed API: WP_Feed_Cache_Transient class |
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4 * |
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5 * @package WordPress |
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6 * @subpackage Feed |
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7 * @since 4.7.0 |
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8 */ |
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9 |
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10 /** |
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11 * Core class used to implement feed cache transients. |
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12 * |
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13 * @since 2.8.0 |
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14 */ |
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15 class WP_Feed_Cache_Transient { |
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16 |
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17 /** |
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18 * Holds the transient name. |
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19 * |
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20 * @since 2.8.0 |
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21 * @var string |
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22 */ |
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23 public $name; |
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24 |
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25 /** |
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26 * Holds the transient mod name. |
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27 * |
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28 * @since 2.8.0 |
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29 * @var string |
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30 */ |
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31 public $mod_name; |
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32 |
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33 /** |
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34 * Holds the cache duration in seconds. |
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35 * |
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36 * Defaults to 43200 seconds (12 hours). |
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37 * |
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38 * @since 2.8.0 |
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39 * @var int |
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40 */ |
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41 public $lifetime = 43200; |
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42 |
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43 /** |
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44 * Constructor. |
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45 * |
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46 * @since 2.8.0 |
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47 * @since 3.2.0 Updated to use a PHP5 constructor. |
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48 * |
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49 * @param string $location URL location (scheme is used to determine handler). |
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50 * @param string $filename Unique identifier for cache object. |
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51 * @param string $extension 'spi' or 'spc'. |
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52 */ |
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53 public function __construct($location, $filename, $extension) { |
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54 $this->name = 'feed_' . $filename; |
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55 $this->mod_name = 'feed_mod_' . $filename; |
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56 |
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57 $lifetime = $this->lifetime; |
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58 /** |
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59 * Filters the transient lifetime of the feed cache. |
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60 * |
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61 * @since 2.8.0 |
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62 * |
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63 * @param int $lifetime Cache duration in seconds. Default is 43200 seconds (12 hours). |
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64 * @param string $filename Unique identifier for the cache object. |
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65 */ |
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66 $this->lifetime = apply_filters( 'wp_feed_cache_transient_lifetime', $lifetime, $filename); |
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67 } |
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68 |
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69 /** |
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70 * Sets the transient. |
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71 * |
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72 * @since 2.8.0 |
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73 * |
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74 * @param SimplePie $data Data to save. |
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75 * @return true Always true. |
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76 */ |
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77 public function save($data) { |
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78 if ( $data instanceof SimplePie ) { |
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79 $data = $data->data; |
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80 } |
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81 |
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82 set_transient($this->name, $data, $this->lifetime); |
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83 set_transient($this->mod_name, time(), $this->lifetime); |
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84 return true; |
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85 } |
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86 |
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87 /** |
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88 * Gets the transient. |
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89 * |
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90 * @since 2.8.0 |
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91 * |
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92 * @return mixed Transient value. |
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93 */ |
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94 public function load() { |
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95 return get_transient($this->name); |
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96 } |
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97 |
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98 /** |
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99 * Gets mod transient. |
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100 * |
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101 * @since 2.8.0 |
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102 * |
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103 * @return mixed Transient value. |
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104 */ |
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105 public function mtime() { |
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106 return get_transient($this->mod_name); |
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107 } |
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108 |
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109 /** |
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110 * Sets mod transient. |
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111 * |
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112 * @since 2.8.0 |
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113 * |
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114 * @return bool False if value was not set and true if value was set. |
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115 */ |
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116 public function touch() { |
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117 return set_transient($this->mod_name, time(), $this->lifetime); |
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118 } |
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119 |
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120 /** |
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121 * Deletes transients. |
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122 * |
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123 * @since 2.8.0 |
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124 * |
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125 * @return true Always true. |
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126 */ |
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127 public function unlink() { |
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128 delete_transient($this->name); |
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129 delete_transient($this->mod_name); |
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130 return true; |
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131 } |
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132 } |