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<?php if(!defined( 'WPINC' )){ die(); } /** * Object Cache API * * @link https://developer.wordpress.org/reference/classes/wp_object_cache/ * * @package WordPress * @subpackage Cache / /* WP_Object_Cache class / require_once $plugin_dir . '/main/objectcache.php'; function wp_cache_init() { $GLOBALS['wp_object_cache'] = WP_Object_Cache::get_instance(); } function wp_cache_add( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->add( $key, $data, $group, (int) $expire ); } function wp_cache_add_multiple( array $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->add_multiple( $data, $group, $expire ); } function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->replace( $key, $data, $group, (int) $expire ); } function wp_cache_set( $key, $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->set( $key, $data, $group, (int) $expire ); } function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) { global $wp_object_cache; return $wp_object_cache->set_multiple( $data, $group, $expire ); } function wp_cache_get( $key, $group = '', $force = false, &$found = null ) { global $wp_object_cache; return $wp_object_cache->get( $key, $group, $force, $found ); } function wp_cache_get_multiple( $keys, $group = '', $force = false ) { global $wp_object_cache; return $wp_object_cache->get_multiple( $keys, $group, $force ); } function wp_cache_delete( $key, $group = '' ) { global $wp_object_cache; return $wp_object_cache->delete( $key, $group ); } function wp_cache_delete_multiple( array $keys, $group = '' ) { global $wp_object_cache; return $wp_object_cache->delete_multiple( $keys, $group ); } function wp_cache_incr( $key, $offset = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->incr( $key, $offset, $group ); } function wp_cache_decr( $key, $offset = 1, $group = '' ) { global $wp_object_cache; return $wp_object_cache->decr( $key, $offset, $group ); } function wp_cache_flush() { global $wp_object_cache; return $wp_object_cache->flush(); } function wp_cache_flush_runtime() { return wp_cache_flush(); } function wp_cache_flush_group( $group ) { global $wp_object_cache; return $wp_object_cache->flush_group( $group ); } function wp_cache_supports( $feature ) { switch ( $feature ) { case 'add_multiple': case 'set_multiple': case 'get_multiple': case 'delete_multiple': case 'flush_runtime': case 'flush_group': return true; default: return false; } } function wp_cache_close() { return true; } function wp_cache_add_global_groups( $groups ) { global $wp_object_cache; $wp_object_cache->add_global_groups( $groups ); } function wp_cache_add_non_persistent_groups( $groups ) { // Default cache doesn't persist so nothing to do here. } function wp_cache_switch_to_blog( $blog_id ) { global $wp_object_cache; $wp_object_cache->switch_to_blog( $blog_id ); } function wp_cache_reset() { _deprecated_function( __FUNCTION__, '3.5.0', 'wp_cache_switch_to_blog()' ); global $wp_object_cache; $wp_object_cache->reset(); } #[AllowDynamicProperties] class WP_Object_Cache { private $cache = array(); public $cache_hits = 0; public $cache_misses = 0; protected $global_groups = array(); private $blog_prefix; private $multisite; public $object_cache; static $instance; public function __construct() { $this->object_cache = \SpeedyCache\ObjectCache::get_instance(); $this->multisite = is_multisite(); $this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : ''; } static function get_instance(){ if(self::$instance){ return self::$instance; } self::$instance = new self; return self::$instance; } public function __get( $name ) { return $this->$name; } public function __set( $name, $value ) { return $this->$name = $value; } public function __isset( $name ) { return isset( $this->$name ); } public function __unset( $name ) { unset( $this->$name ); } protected function is_valid_key( $key ) { if ( is_int( $key ) ) { return true; } if ( is_string( $key ) && trim( $key ) !== '' ) { return true; } $type = gettype( $key ); if ( ! function_exists( '__' ) ) { wp_load_translations_early(); } $message = is_string( $key ) ? __( 'Cache key must not be an empty string.' ) / translators: %s: The type of the given cache key. */ : sprintf( __( 'Cache key must be integer or non-empty string, %s given.' ), $type ); _doing_it_wrong( sprintf( '%s::%s', __CLASS__, debug_backtrace( DEBUG_BACKTRACE_IGNORE_ARGS, 2 )[1]['function'] ), $message, '6.1.0' ); return false; } protected function _exists( $key, $group ) { if(!$id = $this->id($key, $group)){ return false; } return isset($this->cache[$group][$id]); } public function add( $key, $data, $group = 'default', $expire = 0 ) { if(wp_suspend_cache_addition()){ return false; } if(! $this->is_valid_key($key)){ return false; } if($this->_exists($key, $group)){ return false; } return $this->set($key, $data, $group, (int) $expire); } public function add_multiple( array $data, $group = '', $expire = 0 ) { $values = array(); foreach ( $data as $key => $value ) { $values[ $key ] = $this->add( $key, $value, $group, $expire ); } return $values; } public function replace( $key, $data, $group = 'default', $expire = 0 ) { if ( ! $this->is_valid_key( $key ) ) { return false; } if(!$id = $this->id($key, $group)){ return false; } if (!$this->_exists($key, $group)){ if(!$this->object_cache::exists($id)){ return false; } } return $this->set( $key, $data, $group, (int) $expire ); } public function set( $key, $data, $group = 'default', $expire = 0 ) { if(! $this->is_valid_key($key)){ return false; } if(is_object($data)){ $data = clone $data; } if(!$id = $this->id($key, $group)){ return false; } if(!in_array($group, $this->object_cache::$non_cache_group)){ $this->object_cache::set($id, $data, (int) $expire); } $this->cache[$group][$id] = $data; return true; } public function set_multiple( array $data, $group = '', $expire = 0 ) { $values = array(); foreach ( $data as $key => $value ) { $values[ $key ] = $this->set( $key, $value, $group, $expire ); } return $values; } public function get( $key, $group = 'default', $force = false, &$found = null ) { if ( ! $this->is_valid_key( $key ) ) { return false; } if(!$id = $this->id($key, $group)){ $found = false; $this->cache_misses += 1; return false; } // In memory cache if($this->_exists($key, $group)){ $found = true; $this->cache_hits += 1; return $this->cache[$group][$id]; } // Non Cache Group check. if(empty($this->object_cache) \|\| in_array($group, $this->object_cache::$non_cache_group)){ $found = false; $this->cache_misses += 1; return false; } // Fetch cache from redis. if($cache = $this->object_cache::get($id)){ $found = true; $this->cache_hits += 1; if(is_serialized($cache)){ $cache = maybe_unserialize($cache); } $this->cache[$group][$id] = $cache; return $this->cache[$group][$id]; } $found = false; $this->cache_misses += 1; return false; } public function get_multiple($keys, $group = 'default', $force = false) { $values = array(); foreach($keys as $key){ $values[$key] = $this->get($key, $group, $force); } return $values; } public function delete($key, $group = 'default', $deprecated = false) { if (! $this->is_valid_key($key)){ return false; } if(!$id = $this->id($key, $group)){ return false; } if(empty($this->cache[$group]) && empty($this->cache[$group][$id]) && !$this->object_cache::exists($id)) { return false; } unset($this->cache[$group][$id]); $this->object_cache::delete($id); return true; } public function delete_multiple(array $keys, $group = ''){ $values = array(); foreach($keys as $key){ $values[$key] = $this->delete($key, $group); } return $values; } public function incr($key, $offset = 1, $group = 'default'){ return $this->incr_desr($key, $offset = 1, $group, true); } public function decr($key, $offset = 1, $group = 'default'){ return $this->incr_desr($key, $offset = 1, $group, false); } public function incr_desr($key, $offset = 1, $group = 'default', $incr = true){ if (! $this->is_valid_key($key)){ return false; } $cache_val = $this->get($key, $group); if(false === $cache_val){ return false; } if(! is_numeric( $cache_val)){ $cache_val = 0; } $offset = (int) $offset; if($incr){ $cache_val += $offset; } else { $cache_val -= $offset; } if ( $cache_val < 0 ) { $cache_val = 0; } $this->set($key, $cache_val, $group); return $cache_val; } public function flush() { $this->cache = array(); if(!empty($this->object_cache)){ $this->object_cache::flush_db(); } return true; } public function flush_group($group) { unset($this->cache[$group]); return true; } public function add_global_groups($groups){ $groups = (array) $groups; $groups = array_fill_keys($groups, true); $this->global_groups = array_merge($this->global_groups, $groups); } public function is_global($group){ return in_array($group, $this->global_groups); } public function switch_to_blog($blog_id){ $blog_id = (int) $blog_id; $this->blog_prefix = $this->multisite ? $blog_id . ':' : ''; } public function reset(){ _deprecated_function(__FUNCTION__, '3.5.0', 'WP_Object_Cache::switch_to_blog()'); // Clear out non-global caches since the blog ID has changed. foreach(array_keys($this->cache) as $group){ if(! isset( $this->global_groups[$group])){ unset($this->cache[$group]); } } } public function stats() { echo '<p>'; echo "<strong>Cache Hits:</strong> {$this->cache_hits}<br />"; echo "<strong>Cache Misses:</strong> {$this->cache_misses}<br />"; echo '</p>'; echo '<ul>'; foreach($this->cache as $group => $cache){ echo '<li><strong>Group:</strong> ' . esc_html($group) . ' - ( ' . number_format(strlen(serialize($cache)) / KB_IN_BYTES, 2 ) . 'k )</li>'; } echo '</ul>'; } public function id($key, $group){ $prefix = $this->is_global($group) ? '' : $this->blog_prefix; if(empty($group)){ $group = 'default'; } return $prefix . $group . '.' . $key; } }