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| 1 | <?php |
| 2 | /** |
| 3 | * Compatibility class for caching plugins. |
| 4 | */ |
| 5 | |
| 6 | namespace Automattic\Jetpack_Boost\Lib; |
| 7 | |
| 8 | /** |
| 9 | * Compatibility class for caching plugins. |
| 10 | */ |
| 11 | class Cache_Compatibility { |
| 12 | /** |
| 13 | * Checks if the site has a caching plugin. |
| 14 | * |
| 15 | * Supports: |
| 16 | * - Endurance Page Cache |
| 17 | * |
| 18 | * @since 4.0.0 |
| 19 | * |
| 20 | * @return bool True if the site has a caching plugin, false otherwise. |
| 21 | */ |
| 22 | public static function has_cache() { |
| 23 | /** |
| 24 | * Filters whether the site has a caching plugin. |
| 25 | * Useful for testing. |
| 26 | * |
| 27 | * @since 4.0.0 |
| 28 | * |
| 29 | * @param bool $has_cache True if the site has a caching plugin, false otherwise. |
| 30 | */ |
| 31 | $has_cache = apply_filters( 'jetpack_boost_compatibility_has_cache', false ); |
| 32 | if ( $has_cache ) { |
| 33 | return true; |
| 34 | } |
| 35 | |
| 36 | /* |
| 37 | * Disable Page Cache on sites that run Newfold's caching service. |
| 38 | * Their cache is considered enabled when the endurance_cache_level option is set to 2 or 3. |
| 39 | * |
| 40 | * @link https://github.com/bluehost/endurance-page-cache/blob/59fe9993d2cb8a03d1df6da8325f73ad0851ba0a/endurance-page-cache.php#L343 |
| 41 | */ |
| 42 | if ( |
| 43 | class_exists( '\\Endurance_Page_Cache' ) |
| 44 | && 2 <= (int) get_option( 'endurance_cache_level' ) |
| 45 | ) { |
| 46 | return true; |
| 47 | } |
| 48 | |
| 49 | return false; |
| 50 | } |
| 51 | } |