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✎ EDIT: object-cache.php ← BACK

<?php
/**
 * File: object-cache.php
 *
 * @package W3TC
 *
 * phpcs:disable WordPress.PHP.NoSilencedErrors.Discouraged
 *
 * W3 Total Cache Object Cache
 *
 * ObjectCache Version: 1.5 // This line is used in ObjectCache_Environment::is_objectcache_add_in(), which looks for "ObjectCache Version: 1.5".
 */

if ( ! defined( 'ABSPATH' ) ) {
	die();
}

if ( ! defined( 'W3TC_DIR' ) ) {
	define( 'W3TC_DIR', ( defined( 'WP_PLUGIN_DIR' ) ? WP_PLUGIN_DIR : WP_CONTENT_DIR . '/plugins' ) . '/w3-total-cache' );
}

if ( ! @is_dir( W3TC_DIR ) || ! file_exists( W3TC_DIR . '/w3-total-cache-api.php' ) ) {
	if ( ! defined( 'WP_ADMIN' ) ) { // Don't show error on front end.
			require_once ABSPATH . WPINC . '/cache.php';
	} else {
		printf(
			'W3 Total Cache Error: some files appear to be missing or out of place. Please re-install plugin or remove %s. ',
			__FILE__
		);
	}
} else {
	/**
	 * Check if this dropin should be used.
	 *
	 * @since 2.8.2
	 *
	 * @return bool
	 */
	function w3tc_use_ocdropin(): bool {
		if ( class_exists( 'W3TC\Dispatcher' ) ) {
			$config = ( new \W3TC\Dispatcher() )->config();

// Don't use dropin if running in WP-CLI, object cache is enabled, set to disk, and not allows in settings.
			if (
				defined( 'WP_CLI' ) && \WP_CLI &&
				$config->getf_boolean( 'objectcache.enabled' ) &&
				'file' === $config->get_string( 'objectcache.engine' ) &&
				! $config->get_boolean( 'objectcache.wpcli_disk' )
			) {
				return false;
			}

// Use dropin if obect cache is enabled or fragment cache is enabled.
			if (
				$config->getf_boolean( 'objectcache.enabled' ) ||
				(
					$config->is_extension_active( 'fragmentcache' ) &&
					! empty( $config->get_string( array( 'fragmentcache', 'engine' ) ) ) &&
					$config->is_extension_active_frontend( 'fragmentcache' )
				)
			) {
				return true;
			}
		}

return false;
	}

if ( ! w3tc_use_ocdropin() ) {
		// Fallback to default WordPress caching.
		require_once ABSPATH . WPINC . '/cache.php';
	} else {
		require_once W3TC_DIR . '/w3-total-cache-api.php';

/**
		 * Init cache
		 *
		 * @return void
		 */
		function wp_cache_init() {
			$GLOBALS['wp_object_cache'] = \W3TC\Dispatcher::component( 'ObjectCache_WpObjectCache' ); // phpcs:ignore WordPress.WP.GlobalVariablesOverride.Prohibited
		}

/**
		 * Close cache
		 *
		 * @return boolean
		 */
		function wp_cache_close() {
			return true;
		}

/**
		 * Get cache
		 *
		 * @param string    $id    ID.
		 * @param string    $group Group.
		 * @param bool      $force Force.
		 * @param bool|null $found Found.
		 *
		 * @return mixed
		 */
		function wp_cache_get( $id, $group = 'default', $force = false, &$found = null ) {
			global $wp_object_cache;

static $wp_version;

// Detect and cache WP version for conditional logic.
			if ( null === $wp_version ) {
				include ABSPATH . WPINC . '/version.php';
			}

// Apply notoptions short-circuit for affected WP versions (6.4.0–6.7.x).
			if (
				version_compare( $wp_version, '6.4', '>=' ) &&
				version_compare( $wp_version, '6.8', '<' ) &&
				'options' === $group &&
				'notoptions' !== $id
			) {
				// Mirror WP 6.8's early notoptions lookup to avoid repeated external cache checks.
				$notoptions = $wp_object_cache->get( 'notoptions', 'options', $force, $found );

if ( ! is_array( $notoptions ) ) {
					$notoptions = array();
					$wp_object_cache->set( 'notoptions', $notoptions, 'options' );
				}

if ( isset( $notoptions[ $id ] ) ) {
					$found = false;
					return false;
				}
			}

return $wp_object_cache->get( $id, $group, $force, $found );
		}

/**
		 * Retrieves multiple values from the cache in one call.
		 *
		 * @since 2.2.8
		 *
		 * @param array  $ids  Array of keys under which the cache contents are stored.
		 * @param string $group Optional. Where the cache contents are grouped. Default 'default'.
		 * @param bool   $force Optional. Whether to force an update of the local cache
		 *                      from the persistent cache. Default false.
		 *
		 * @return array Array of return values, grouped by key. Each value is either
		 *               the cache contents on success, or false on failure.
		 */
		function wp_cache_get_multiple( $ids, $group = 'default', $force = false ) {
			global $wp_object_cache;

return $wp_object_cache->get_multiple( $ids, $group, $force );
		}

/**
		 * Set cache
		 *
		 * @param string  $id     ID.
		 * @param mixed   $data   Data.
		 * @param string  $group  Group.
		 * @param integer $expire Expire.
		 *
		 * @return boolean
		 */
		function wp_cache_set( $id, $data, $group = 'default', $expire = 0 ) {
			global $wp_object_cache;

return $wp_object_cache->set( $id, $data, $group, (int) $expire );
		}

/**
		 * Sets multiple values to the cache in one call.
		 *
		 * @since 2.2.8
		 *
		 * @param array  $data   Array of key and value to be set.
		 * @param string $group  Optional. Where the cache contents are grouped. Default empty.
		 * @param int    $expire Optional. When to expire the cache contents, in seconds.
		 *                       Default 0 (no expiration).
		 *
		 * @return bool[] Array of return values, grouped by key. Each value is always true.
		 */
		function wp_cache_set_multiple( $data, $group = 'default', $expire = 0 ) {
			global $wp_object_cache;

return $wp_object_cache->set_multiple( $data, $group, (int) $expire );
		}

/**
		 * Delete from cache
		 *
		 * @param string $id    ID.
		 * @param string $group Group.
		 *
		 * @return boolean
		 */
		function wp_cache_delete( $id, $group = 'default' ) {
			global $wp_object_cache;

return $wp_object_cache->delete( $id, $group );
		}

/**
		 * Deletes multiple values from the cache in one call.
		 *
		 * @since 2.2.8
		 *
		 * @param array  $keys  Array of keys to be deleted.
		 * @param string $group Optional. Where the cache contents are grouped. Default empty.
		 *
		 * @return bool[] Array of return values, grouped by key. Each value is either
		 *                true on success, or false if the contents were not deleted.
		 */
		function wp_cache_delete_multiple( $keys, $group = 'default' ) {
			global $wp_object_cache;

return $wp_object_cache->delete_multiple( $keys, $group );
		}

/**
		 * Add data to cache
		 *
		 * @param string  $id     ID.
		 * @param mixed   $data   Data.
		 * @param string  $group  Group.
		 * @param integer $expire Expire.
		 *
		 * @return boolean
		 */
		function wp_cache_add( $id, $data, $group = 'default', $expire = 0 ) {
			global $wp_object_cache;

return $wp_object_cache->add( $id, $data, $group, (int) $expire );
		}

/**
		 * Adds multiple values to the cache in one call, if the cache keys don't already exist.
		 *
		 * @since 2.2.8
		 *
		 * @param array  $data   Array of keys and values to be added.
		 * @param string $group  Optional. Where the cache contents are grouped. Default empty.
		 * @param int    $expire Optional. When to expire the cache contents, in seconds.
		 *                       Default 0 (no expiration).
		 * @return bool[] Array of return values, grouped by key. Each value is either
		 *                true on success, or false if cache key and group already exist.
		 */
		function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) {
			global $wp_object_cache;

return $wp_object_cache->add_multiple( $data, $group, $expire );
		}

/**
		 * Replace data in cache
		 *
		 * @param string  $id     ID.
		 * @param mixed   $data   Data.
		 * @param string  $group  Group.
		 * @param integer $expire Expire.
		 *
		 * @return boolean
		 */
		function wp_cache_replace( $id, $data, $group = 'default', $expire = 0 ) {
			global $wp_object_cache;

return $wp_object_cache->replace( $id, $data, $group, (int) $expire );
		}

/**
		 * Reset cache
		 *
		 * @return boolean
		 */
		function wp_cache_reset() {
			global $wp_object_cache;

return $wp_object_cache->reset();
		}

/**
		 * Flush cache
		 *
		 * @return boolean
		 */
		function wp_cache_flush() {
			global $wp_object_cache;

return $wp_object_cache->flush();
		}

/**
		 * Removes all cache items in a group.
		 *
		 * @param string $group Group.
		 *
		 * @return boolean
		 */
		function wp_cache_flush_group( string $group ) {
			global $wp_object_cache;

return $wp_object_cache->flush_group( $group );
		}

/**
		 * Removes all cache items from the in-memory runtime cache.
		 *
		 * @return boolean
		 */
		function wp_cache_flush_runtime() {
			global $wp_object_cache;

return $wp_object_cache->flush_runtime();
		}

/**
		 * Checks if the object cache supports a particular feature.
		 *
		 * @param string $feature Feature name.
		 *
		 * @return bool True if the feature is supported, false otherwise.
		 */
		function wp_cache_supports( string $feature ) {
			global $wp_object_cache;

return $wp_object_cache->supports( $feature );
		}

/**
		 * Add global groups
		 *
		 * @param array $groups Groups.
		 *
		 * @return void
		 */
		function wp_cache_add_global_groups( $groups ) {
			global $wp_object_cache;

$wp_object_cache->add_global_groups( $groups );
		}

/**
		 * Add non-persistent groups
		 *
		 * @param array $groups Groups.
		 *
		 * @return void
		 */
		function wp_cache_add_non_persistent_groups( $groups ) {
			global $wp_object_cache;

$wp_object_cache->add_nonpersistent_groups( $groups );
		}

/**
		 * Increment numeric cache item's value
		 *
		 * @param int|string $key    The cache key to increment.
		 * @param int        $offset The amount by which to increment the item's value. Default is 1.
		 * @param string     $group  The group the key is in.
		 *
		 * @return bool|int False on failure, the item's new value on success.
		 */
		function wp_cache_incr( $key, $offset = 1, $group = 'default' ) {
			global $wp_object_cache;

return $wp_object_cache->incr( $key, $offset, $group );
		}

/**
		 * Decrement numeric cache item's value
		 *
		 * @param int|string $key    The cache key to increment.
		 * @param int        $offset The amount by which to decrement the item's value. Default is 1.
		 * @param string     $group  The group the key is in.
		 *
		 * @return bool|int False on failure, the item's new value on success.
		 */
		function wp_cache_decr( $key, $offset = 1, $group = 'default' ) {
			global $wp_object_cache;

return $wp_object_cache->decr( $key, $offset, $group );
		}

/**
		 * Switch the internal blog id.
		 *
		 * This changes the blog id used to create keys in blog specific groups.
		 *
		 * @param int $blog_id Blog ID.
		 *
		 * @return void
		 */
		function wp_cache_switch_to_blog( $blog_id ) {
			global $wp_object_cache;

$wp_object_cache->switch_to_blog( $blog_id );
		}
	}
}

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