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| 1 | <?php |
| 2 | /** |
| 3 | * Transients for Jetpack Boost. |
| 4 | * |
| 5 | * @package automattic/jetpack-boost-core |
| 6 | */ |
| 7 | |
| 8 | namespace Automattic\Jetpack\Boost_Core\Lib; |
| 9 | |
| 10 | /** |
| 11 | * Class Transient |
| 12 | */ |
| 13 | class Transient { |
| 14 | |
| 15 | const OPTION_PREFIX = 'jb_transient_'; |
| 16 | |
| 17 | /** |
| 18 | * Get the key with prefix. |
| 19 | * |
| 20 | * @param string $key the key to be prefixed. |
| 21 | */ |
| 22 | public static function key( $key ) { |
| 23 | return static::OPTION_PREFIX . $key; |
| 24 | } |
| 25 | |
| 26 | /** |
| 27 | * Updates a cache entry. Creates the cache entry if it doesn't exist. |
| 28 | * |
| 29 | * @param string $key Cache key name. |
| 30 | * @param mixed $value Cache value. |
| 31 | * @param int $expiry Cache expiration in seconds. |
| 32 | * |
| 33 | * @return void |
| 34 | */ |
| 35 | public static function set( $key, $value, $expiry = 0 ) { |
| 36 | if ( 0 === $expiry ) { |
| 37 | $expiry = YEAR_IN_SECONDS; |
| 38 | } |
| 39 | |
| 40 | $data = array( |
| 41 | 'expire' => time() + $expiry, |
| 42 | 'data' => $value, |
| 43 | ); |
| 44 | update_option( self::key( $key ), $data, false ); |
| 45 | } |
| 46 | |
| 47 | /** |
| 48 | * Gets a cache entry. |
| 49 | * |
| 50 | * @param string $key Cache key name. |
| 51 | * @param mixed $default Default value. |
| 52 | * |
| 53 | * @return mixed |
| 54 | */ |
| 55 | public static function get( $key, $default = null ) { |
| 56 | // Ensure everything's there. |
| 57 | $option = get_option( self::key( $key ), $default ); |
| 58 | if ( $default === $option || ! isset( $option['expire'] ) || ! isset( $option['data'] ) |
| 59 | ) { |
| 60 | return $default; |
| 61 | } |
| 62 | |
| 63 | // Maybe expire the result instead of returning it. |
| 64 | $expire = $option['expire']; |
| 65 | $data = $option['data']; |
| 66 | if ( false !== $expire && $expire < time() ) { |
| 67 | self::delete( $key ); |
| 68 | |
| 69 | return $default; |
| 70 | } |
| 71 | |
| 72 | return $data; |
| 73 | } |
| 74 | |
| 75 | /** |
| 76 | * Delete all expired transients. |
| 77 | * |
| 78 | * @return int The number of deleted transients. |
| 79 | */ |
| 80 | public static function delete_expired() { |
| 81 | global $wpdb; |
| 82 | |
| 83 | //phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching |
| 84 | $option_names = $wpdb->get_col( |
| 85 | $wpdb->prepare( |
| 86 | "SELECT option_name FROM $wpdb->options WHERE option_name LIKE %s", |
| 87 | self::OPTION_PREFIX . '%' |
| 88 | ) |
| 89 | ); |
| 90 | |
| 91 | $count = 0; |
| 92 | foreach ( $option_names as $option_name ) { |
| 93 | $value = get_option( $option_name ); |
| 94 | if ( isset( $value['expire'] ) && $value['expire'] < time() ) { |
| 95 | delete_option( $option_name ); |
| 96 | ++$count; |
| 97 | } |
| 98 | } |
| 99 | |
| 100 | return $count; |
| 101 | } |
| 102 | |
| 103 | /** |
| 104 | * Delete all `Transient` values with certain prefix from database. |
| 105 | * |
| 106 | * @param string $prefix Cache key prefix. |
| 107 | */ |
| 108 | public static function delete_by_prefix( $prefix ) { |
| 109 | global $wpdb; |
| 110 | |
| 111 | /** |
| 112 | * The prefix used in option_name. |
| 113 | */ |
| 114 | $option_prefix = static::key( $prefix ); |
| 115 | |
| 116 | /** |
| 117 | * LIKE search pattern for the delete query. |
| 118 | */ |
| 119 | $prefix_search_pattern = $wpdb->esc_like( $option_prefix ) . '%'; |
| 120 | |
| 121 | //phpcs:disable WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching |
| 122 | $option_names = $wpdb->get_col( |
| 123 | $wpdb->prepare( |
| 124 | " |
| 125 | SELECT option_name |
| 126 | FROM $wpdb->options |
| 127 | WHERE `option_name` LIKE %s |
| 128 | ", |
| 129 | $prefix_search_pattern |
| 130 | ) |
| 131 | ); |
| 132 | // phpcs:enable |
| 133 | |
| 134 | // Go through each option individually to ensure caches are handled properly. |
| 135 | foreach ( $option_names as $option_name ) { |
| 136 | delete_option( $option_name ); |
| 137 | } |
| 138 | } |
| 139 | |
| 140 | /** |
| 141 | * Delete all `Transient` values from the database. |
| 142 | * |
| 143 | * @return void |
| 144 | */ |
| 145 | public static function delete_bulk() { |
| 146 | global $wpdb; |
| 147 | |
| 148 | $prefix_search_pattern = $wpdb->esc_like( self::OPTION_PREFIX ) . '%'; |
| 149 | |
| 150 | //phpcs:ignore WordPress.DB.DirectDatabaseQuery.DirectQuery,WordPress.DB.DirectDatabaseQuery.NoCaching |
| 151 | $wpdb->query( |
| 152 | $wpdb->prepare( |
| 153 | "DELETE FROM $wpdb->options WHERE option_name LIKE %s", |
| 154 | $prefix_search_pattern |
| 155 | ) |
| 156 | ); |
| 157 | |
| 158 | if ( |
| 159 | function_exists( 'wp_cache_flush_group' ) && |
| 160 | function_exists( 'wp_cache_supports' ) && |
| 161 | wp_cache_supports( 'flush_group' ) |
| 162 | ) { |
| 163 | wp_cache_flush_group( 'options' ); |
| 164 | } |
| 165 | } |
| 166 | |
| 167 | /** |
| 168 | * Delete a cache entry. |
| 169 | * |
| 170 | * @param string $key Cache key name. |
| 171 | * |
| 172 | * @return void |
| 173 | */ |
| 174 | public static function delete( $key ) { |
| 175 | delete_option( self::key( $key ) ); |
| 176 | } |
| 177 | } |