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<?php
/**
* LiteSpeed Object Cache Library
*
* @since 1.8
*/
defined( 'WPINC' ) || exit;
/**
* Handle exception
*/
if ( ! function_exists( 'litespeed_exception_handler' ) ) {
function litespeed_exception_handler( $errno, $errstr, $errfile, $errline ) {
throw new \ErrorException($errstr, 0, $errno, $errfile, $errline);
}
}
require_once __DIR__ . '/object-cache.cls.php';
/**
* Sets up Object Cache Global and assigns it.
*
* @since 1.8
*
* @global WP_Object_Cache $wp_object_cache
*/
function wp_cache_init() {
$GLOBALS['wp_object_cache'] = WP_Object_Cache::get_instance();
}
/**
* Adds data to the cache, if the cache key doesn't already exist.
*
* @since 1.8
*
* @see WP_Object_Cache::add()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The cache key to use for retrieval later.
* @param mixed $data The data to add to the cache.
* @param string $group Optional. The group to add the cache to. Enables the same key
* to be used across groups. Default empty.
* @param int $expire Optional. When the cache data should expire, in seconds.
* Default 0 (no expiration).
* @return bool True on success, false if cache key and group already exist.
*/
function wp_cache_add( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
return $wp_object_cache->add( $key, $data, $group, (int) $expire );
}
/**
* Adds multiple values to the cache in one call.
*
* @since 5.4
*
* @see WP_Object_Cache::add_multiple()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param array $data Array of keys and values 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 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 );
}
/**
* Replaces the contents of the cache with new data.
*
* @since 1.8
*
* @see WP_Object_Cache::replace()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The key for the cache data that should be replaced.
* @param mixed $data The new data to store in the cache.
* @param string $group Optional. The group for the cache data that should be replaced.
* Default empty.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
* @return bool True if contents were replaced, false if original value does not exist.
*/
function wp_cache_replace( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
return $wp_object_cache->replace( $key, $data, $group, (int) $expire );
}
/**
* Saves the data to the cache.
*
* Differs from wp_cache_add() and wp_cache_replace() in that it will always write data.
*
* @since 1.8
*
* @see WP_Object_Cache::set()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The cache key to use for retrieval later.
* @param mixed $data The contents to store in the cache.
* @param string $group Optional. Where to group the cache contents. Enables the same key
* to be used across groups. Default empty.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
* @return bool True on success, false on failure.
*/
function wp_cache_set( $key, $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
return $wp_object_cache->set( $key, $data, $group, (int) $expire );
}
/**
* Sets multiple values to the cache in one call.
*
* @since 5.4
*
* @see WP_Object_Cache::set_multiple()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param array $data Array of keys and values 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 either
* true on success, or false on failure.
*/
function wp_cache_set_multiple( array $data, $group = '', $expire = 0 ) {
global $wp_object_cache;
return $wp_object_cache->set_multiple( $data, $group, $expire );
}
/**
* Retrieves the cache contents from the cache by key and group.
*
* @since 1.8
*
* @see WP_Object_Cache::get()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The key under which the cache contents are stored.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
* @param bool $force Optional. Whether to force an update of the local cache
* from the persistent cache. Default false.
* @param bool $found Optional. Whether the key was found in the cache (passed by reference).
* Disambiguates a return of false, a storable value. Default null.
* @return mixed|false The cache contents on success, false on failure to retrieve contents.
*/
function wp_cache_get( $key, $group = '', $force = false, &$found = null ) {
global $wp_object_cache;
return $wp_object_cache->get( $key, $group, $force, $found );
}
/**
* Retrieves multiple values from the cache in one call.
*
* @since 5.4
*
* @see WP_Object_Cache::get_multiple()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param array $keys Array of keys under which the cache contents are stored.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
* @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( $keys, $group = '', $force = false ) {
global $wp_object_cache;
return $wp_object_cache->get_multiple( $keys, $group, $force );
}
/**
* Removes the cache contents matching key and group.
*
* @since 1.8
*
* @see WP_Object_Cache::delete()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key What the contents in the cache are called.
* @param string $group Optional. Where the cache contents are grouped. Default empty.
* @return bool True on successful removal, false on failure.
*/
function wp_cache_delete( $key, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->delete( $key, $group );
}
/**
* Deletes multiple values from the cache in one call.
*
* @since 5.4
*
* @see WP_Object_Cache::delete_multiple()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param array $keys Array of keys under which the cache to 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( array $keys, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->delete_multiple( $keys, $group );
}
/**
* Increments numeric cache item's value.
*
* @since 1.8
*
* @see WP_Object_Cache::incr()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The key for the cache contents that should be incremented.
* @param int $offset Optional. The amount by which to increment the item's value.
* Default 1.
* @param string $group Optional. The group the key is in. Default empty.
* @return int|false The item's new value on success, false on failure.
*/
function wp_cache_incr( $key, $offset = 1, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->incr( $key, $offset, $group );
}
/**
* Decrements numeric cache item's value.
*
* @since 1.8
*
* @see WP_Object_Cache::decr()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int|string $key The cache key to decrement.
* @param int $offset Optional. The amount by which to decrement the item's value.
* Default 1.
* @param string $group Optional. The group the key is in. Default empty.
* @return int|false The item's new value on success, false on failure.
*/
function wp_cache_decr( $key, $offset = 1, $group = '' ) {
global $wp_object_cache;
return $wp_object_cache->decr( $key, $offset, $group );
}
/**
* Removes all cache items.
*
* @since 1.8
*
* @see WP_Object_Cache::flush()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @return bool True on success, false on failure.
*/
function wp_cache_flush() {
global $wp_object_cache;
return $wp_object_cache->flush();
}
/**
* Removes all cache items from the in-memory runtime cache.
*
* @since 5.4
*
* @see WP_Object_Cache::flush()
*
* @return bool True on success, false on failure.
*/
function wp_cache_flush_runtime() {
return wp_cache_flush();
}
/**
* Removes all cache items in a group, if the object cache implementation supports it.
*
* Before calling this function, always check for group flushing support using the
* `wp_cache_supports( 'flush_group' )` function.
*
* @since 5.4
*
* @see WP_Object_Cache::flush_group()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param string $group Name of group to remove from cache.
* @return bool True if group was flushed, false otherwise.
*/
function wp_cache_flush_group( $group ) {
global $wp_object_cache;
return $wp_object_cache->flush_group( $group );
}
/**
* Determines whether the object cache implementation supports a particular feature.
*
* @since 5.4
*
* @param string $feature Name of the feature to check for. Possible values include:
* 'add_multiple', 'set_multiple', 'get_multiple', 'delete_multiple',
* 'flush_runtime', 'flush_group'.
* @return bool True if the feature is supported, false otherwise.
*/
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;
}
}
/**
* Closes the cache.
*
* This function has ceased to do anything since WordPress 2.5. The
* functionality was removed along with the rest of the persistent cache.
*
* This does not mean that plugins can't implement this function when they need
* to make sure that the cache is cleaned up after WordPress no longer needs it.
*
* @since 1.8
*
* @return true Always returns true.
*/
function wp_cache_close() {
return true;
}
/**
* Adds a group or set of groups to the list of global groups.
*
* @since 1.8
*
* @see WP_Object_Cache::add_global_groups()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param string|string[] $groups A group or an array of groups to add.
*/
function wp_cache_add_global_groups( $groups ) {
global $wp_object_cache;
$wp_object_cache->add_global_groups( $groups );
}
/**
* Adds a group or set of groups to the list of non-persistent groups.
*
* @since 1.8
*
* @param string|string[] $groups A group or an array of groups to add.
*/
function wp_cache_add_non_persistent_groups( $groups ) {
global $wp_object_cache;
$wp_object_cache->add_non_persistent_groups( $groups );
}
/**
* Switches the internal blog ID.
*
* This changes the blog id used to create keys in blog specific groups.
*
* @since 1.8
*
* @see WP_Object_Cache::switch_to_blog()
* @global WP_Object_Cache $wp_object_cache Object cache global instance.
*
* @param int $blog_id Site ID.
*/
function wp_cache_switch_to_blog( $blog_id ) {
global $wp_object_cache;
$wp_object_cache->switch_to_blog( $blog_id );
}
class WP_Object_Cache {
protected static $_instance;
private $_object_cache;
private $_cache = array();
private $_cache_404 = array();
private $cache_total = 0;
private $count_hit_incall = 0;
private $count_hit = 0;
private $count_miss_incall = 0;
private $count_miss = 0;
private $count_set = 0;
protected $global_groups = array();
private $blog_prefix;
private $multisite;
/**
* Init.
*
* @since 1.8
*/
public function __construct() {
$this->_object_cache = \LiteSpeed\Object_Cache::cls();
$this->multisite = is_multisite();
$this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : '';
/**
* Fix multiple instance using same oc issue
* @since 1.8.2
*/
! defined( 'LSOC_PREFIX' ) && define( 'LSOC_PREFIX', substr( md5( __FILE__ ), -5 ) );
}
/**
* Makes private properties readable for backward compatibility.
*
* @since 5.4
* @access public
*
* @param string $name Property to get.
* @return mixed Property.
*/
public function __get( $name ) {
return $this->$name;
}
/**
* Makes private properties settable for backward compatibility.
*
* @since 5.4
* @access public
*
* @param string $name Property to set.
* @param mixed $value Property value.
* @return mixed Newly-set property.
*/
public function __set( $name, $value ) {
return $this->$name = $value;
}
/**
* Makes private properties checkable for backward compatibility.
*
* @since 5.4
* @access public
*
* @param string $name Property to check if set.
* @return bool Whether the property is set.
*/
public function __isset( $name ) {
return isset( $this->$name );
}
/**
* Makes private properties un-settable for backward compatibility.
*
* @since 5.4
* @access public
*
* @param string $name Property to unset.
*/
public function __unset( $name ) {
unset( $this->$name );
}
/**
* Serves as a utility function to determine whether a key is valid.
*
* @since 5.4
* @access protected
*
* @param int|string $key Cache key to check for validity.
* @return bool Whether the key is valid.
*/
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;
}
/**
* Get the final key.
*
* @since 1.8
* @access private
*/
private function _key( $key, $group = 'default' ) {
if ( empty( $group ) ) {
$group = 'default';
}
$prefix = $this->_object_cache->is_global( $group ) ? '' : $this->blog_prefix;
return LSOC_PREFIX . $prefix . $group . '.' . $key;
}
/**
* Output debug info.
*
* @since 1.8
* @access public
*/
public function debug() {
return ' [total] ' . $this->cache_total
. ' [hit_incall] ' . $this->count_hit_incall
. ' [hit] ' . $this->count_hit
. ' [miss_incall] ' . $this->count_miss_incall
. ' [miss] ' . $this->count_miss
. ' [set] ' . $this->count_set;
}
/**
* Adds data to the cache if it doesn't already exist.
*
* @since 1.8
* @access public
*
* @uses WP_Object_Cache::_exists() Checks to see if the cache already has data.
* @uses WP_Object_Cache::set() Sets the data after the checking the cache
* contents existence.
*
* @param int|string $key What to call the contents in the cache.
* @param mixed $data The contents to store in the cache.
* @param string $group Optional. Where to group the cache contents. Default 'default'.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
* @return bool True on success, false if cache key and group already exist.
*/
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 ( empty( $group ) ) {
$group = 'default';
}
$id = $this->_key( $key, $group );
if ( array_key_exists( $id, $this->_cache ) ) {
return false;
}
return $this->set( $key, $data, $group, (int) $expire );
}
/**
* Adds multiple values to the cache in one call.
*
* @since 5.4
* @access public
*
* @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.
*/
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;
}
/**
* Replaces the contents in the cache, if contents already exist.
*
* @since 1.8
* @access public
*
* @see WP_Object_Cache::set()
*
* @param int|string $key What to call the contents in the cache.
* @param mixed $data The contents to store in the cache.
* @param string $group Optional. Where to group the cache contents. Default 'default'.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
* @return bool True if contents were replaced, false if original value does not exist.
*/
public function replace( $key, $data, $group = 'default', $expire = 0 ) {
if ( ! $this->is_valid_key( $key ) ) {
return false;
}
if ( empty( $group ) ) {
$group = 'default';
}
$id = $this->_key( $key, $group );
if ( ! array_key_exists( $id, $this->_cache ) ) {
return false;
}
return $this->set( $key, $data, $group, (int) $expire );
}
/**
* Sets the data contents into the cache.
*
* The cache contents are grouped by the $group parameter followed by the
* $key. This allows for duplicate IDs in unique groups. Therefore, naming of
* the group should be used with care and should follow normal function
* naming guidelines outside of core WordPress usage.
*
* The $expire parameter is not used, because the cache will automatically
* expire for each time a page is accessed and PHP finishes. The method is
* more for cache plugins which use files.
*
* @since 1.8
* @since 5.4 Returns false if cache key is invalid.
* @access public
*
* @param int|string $key What to call the contents in the cache.
* @param mixed $data The contents to store in the cache.
* @param string $group Optional. Where to group the cache contents. Default 'default'.
* @param int $expire Optional. When to expire the cache contents, in seconds.
* Default 0 (no expiration).
* @return bool True if contents were set, false if key is invalid.
*/
public function set( $key, $data, $group = 'default', $expire = 0 ) {
if ( ! $this->is_valid_key( $key ) ) {
return false;
}
if ( empty( $group ) ) {
$group = 'default';
}
$id = $this->_key( $key, $group );
if ( is_object( $data ) ) {
$data = clone $data;
}
// error_log("oc: set \t\t\t[key] " . $id );
$this->_cache[ $id ] = $data;
if( array_key_exists( $id, $this->_cache_404 ) ) {
// error_log("oc: unset404\t\t\t[key] " . $id );
unset( $this->_cache_404[ $id ] );
}
if ( ! $this->_object_cache->is_non_persistent( $group ) ) {
$this->_object_cache->set( $id, serialize( array( 'data' => $data ) ), (int) $expire );
$this->count_set ++;
}
if ( $this->_object_cache->store_transients( $group ) ) {
$this->_transient_set( $key, $data, $group, (int) $expire );
}
return true;
}
/**
* Sets multiple values to the cache in one call.
*
* @since 5.4
* @access public
*
* @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.
*/
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;
}
/**
* Retrieves the cache contents, if it exists.
*
* The contents will be first attempted to be retrieved by searching by the
* key in the cache group. If the cache is hit (success) then the contents
* are returned.
*
* On failure, the number of cache misses will be incremented.
*
* @since 1.8
* @access public
*
* @param int|string $key The key under which the cache contents are stored.
* @param string $group Optional. Where the cache contents are grouped. Default 'default'.
* @param bool $force Optional. Unused. Whether to force an update of the local cache
* from the persistent cache. Default false.
* @param bool $found Optional. Whether the key was found in the cache (passed by reference).
* Disambiguates a return of false, a storable value. Default null.
* @return mixed|false The cache contents on success, false on failure to retrieve contents.
*/
public function get( $key, $group = 'default', $force = false, &$found = null ) {
if ( ! $this->is_valid_key( $key ) ) {
return false;
}
if ( empty( $group ) ) {
$group = 'default';
}
$id = $this->_key( $key, $group );
// error_log('');
// error_log("oc: get \t\t\t[key] " . $id . ( $force ? "\t\t\t [forced] " : '' ) );
$found = false;
$found_in_oc = false;
$cache_val = false;
if ( array_key_exists( $id, $this->_cache ) && ! $force ) {
$found = true;
$cache_val = $this->_cache[ $id ];
$this->count_hit_incall ++;
}
elseif ( ! array_key_exists( $id, $this->_cache_404 ) && ! $this->_object_cache->is_non_persistent( $group ) ) {
$v = $this->_object_cache->get( $id );
if ( $v !== null ) {
$v = @maybe_unserialize( $v );
}
// To be compatible with false val
if ( is_array( $v ) && array_key_exists( 'data', $v ) ) {
$this->count_hit ++;
$found = true;
$found_in_oc = true;
$cache_val = $v[ 'data' ];
}
else { // Can't find key, cache it to 404
// error_log("oc: add404\t\t\t[key] " . $id );
$this->_cache_404[ $id ] = 1;
$this->count_miss ++;
}
}
else {
$this->count_miss_incall ++;
}
if ( is_object( $cache_val ) ) {
$cache_val = clone $cache_val;
}
// If not found but has `Store Transients` cfg on, still need to follow WP's get_transient() logic
if ( ! $found && $this->_object_cache->store_transients( $group ) ) {
$cache_val = $this->_transient_get( $key, $group );
if ( $cache_val ) {
$found = true; // $found not used for now (v1.8.3)
}
}
if ( $found_in_oc ) {
$this->_cache[ $id ] = $cache_val;
}
$this->cache_total ++;
return $cache_val;
}
/**
* Retrieves multiple values from the cache in one call.
*
* @since 5.4
* @access public
*
* @param array $keys 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.
*/
public function get_multiple( $keys, $group = 'default', $force = false ) {
$values = array();
foreach ( $keys as $key ) {
$values[ $key ] = $this->get( $key, $group, $force );
}
return $values;
}
/**
* Removes the contents of the cache key in the group.
*
* If the cache key does not exist in the group, then nothing will happen.
*
* @since 1.8
* @access public
*
* @param int|string $key What the contents in the cache are called.
* @param string $group Optional. Where the cache contents are grouped. Default 'default'.
* @param bool $deprecated Optional. Unused. Default false.
* @return bool True on success, false if the contents were not deleted.
*/
public function delete( $key, $group = 'default', $deprecated = false ) {
if ( ! $this->is_valid_key( $key ) ) {
return false;
}
if ( empty( $group ) ) {
$group = 'default';
}
$id = $this->_key( $key, $group );
if ( $this->_object_cache->store_transients( $group ) ) {
$this->_transient_del( $key, $group );
}
if ( array_key_exists( $id, $this->_cache ) ) {
unset( $this->_cache[ $id ] );
}
// error_log("oc: delete \t\t\t[key] " . $id );
if ( $this->_object_cache->is_non_persistent( $group ) ) {
return false;
}
return $this->_object_cache->delete( $id );
}
/**
* Deletes multiple values from the cache in one call.
*
* @since 5.4
* @access public
*
* @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.
*/
public function delete_multiple( array $keys, $group = '' ) {
$values = array();
foreach ( $keys as $key ) {
$values[ $key ] = $this->delete( $key, $group );
}
return $values;
}
/**
* Increments numeric cache item's value.
*
* @since 5.4
*
* @param int|string $key The cache key to increment.
* @param int $offset Optional. The amount by which to increment the item's value.
* Default 1.
* @param string $group Optional. The group the key is in. Default 'default'.
* @return int|false The item's new value on success, false on failure.
*/
public function incr( $key, $offset = 1, $group = 'default' ) {
return incr_desr( $key, $offset, $group, true );
}
/**
* Decrements numeric cache item's value.
*
* @since 5.4
*
* @param int|string $key The cache key to decrement.
* @param int $offset Optional. The amount by which to decrement the item's value.
* Default 1.
* @param string $group Optional. The group the key is in. Default 'default'.
* @return int|false The item's new value on success, false on failure.
*/
public function decr( $key, $offset = 1, $group = 'default' ) {
return incr_desr( $key, $offset, $group, false );
}
/**
* Increments or decrements numeric cache item's value.
*
* @since 1.8
* @access public
*/
public function incr_desr( $key, $offset = 1, $group = 'default', $incr = true ) {
if ( ! $this->is_valid_key( $key ) ) {
return false;
}
if ( empty( $group ) ) {
$group = 'default';
}
$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;
}
/**
* Clears the object cache of all data.
*
* @since 1.8
* @access public
*
* @return true Always returns true.
*/
public function flush() {
$this->_cache = array();
$this->_cache_404 = array();
// error_log("oc: flush " );
$this->_object_cache->flush();
return true;
}
/**
* Sets the list of global cache groups.
*
* @since 1.8
* @access public
*
* @param string|string[] $groups List of groups that are global.
*/
public function add_global_groups( $groups ) {
$groups = (array) $groups;
$this->_object_cache->add_global_groups( $groups );
}
/**
* Sets the list of non-persistent cache groups.
*
* @since 1.8
* @access public
*/
public function add_non_persistent_groups( $groups ) {
$groups = (array) $groups;
$this->_object_cache->add_non_persistent_groups( $groups );
}
/**
* Switches the internal blog ID.
*
* This changes the blog ID used to create keys in blog specific groups.
*
* @since 1.8
* @access public
*
* @param int $blog_id Blog ID.
*/
public function switch_to_blog( $blog_id ) {
$blog_id = (int) $blog_id;
$this->blog_prefix = $this->multisite ? $blog_id . ':' : '';
}
/**
* Get transient from wp table
*
* @since 1.8.3
* @access private
* @see `wp-includes/option.php` function `get_transient`/`set_site_transient`
*/
private function _transient_get( $transient, $group ) {
if ( $group == 'transient' ) {
/**** Ori WP func start ****/
$transient_option = '_transient_' . $transient;
if ( ! wp_installing() ) {
// If option is not in alloptions, it is not autoloaded and thus has a timeout
$alloptions = wp_load_alloptions();
if ( !isset( $alloptions[$transient_option] ) ) {
$transient_timeout = '_transient_timeout_' . $transient;
$timeout = get_option( $transient_timeout );
if ( false !== $timeout && $timeout < time() ) {
delete_option( $transient_option );
delete_option( $transient_timeout );
$value = false;
}
}
}
if ( ! isset( $value ) )
$value = get_option( $transient_option );
/**** Ori WP func end ****/
}
elseif ( $group == 'site-transient' ) {
/**** Ori WP func start ****/
$no_timeout = array('update_core', 'update_plugins', 'update_themes');
$transient_option = '_site_transient_' . $transient;
if ( ! in_array( $transient, $no_timeout ) ) {
$transient_timeout = '_site_transient_timeout_' . $transient;
$timeout = get_site_option( $transient_timeout );
if ( false !== $timeout && $timeout < time() ) {
delete_site_option( $transient_option );
delete_site_option( $transient_timeout );
$value = false;
}
}
if ( ! isset( $value ) )
$value = get_site_option( $transient_option );
/**** Ori WP func end ****/
}
else {
$value = false;
}
return $value;
}
/**
* Set transient to WP table
*
* @since 1.8.3
* @access private
* @see `wp-includes/option.php` function `set_transient`/`set_site_transient`
*/
private function _transient_set( $transient, $value, $group, $expiration ) {
if ( $group == 'transient' ) {
/**** Ori WP func start ****/
$transient_timeout = '_transient_timeout_' . $transient;
$transient_option = '_transient_' . $transient;
if ( false === get_option( $transient_option ) ) {
$autoload = 'yes';
if ( (int) $expiration ) {
$autoload = 'no';
add_option( $transient_timeout, time() + (int) $expiration, '', 'no' );
}
$result = add_option( $transient_option, $value, '', $autoload );
} else {
// If expiration is requested, but the transient has no timeout option,
// delete, then re-create transient rather than update.
$update = true;
if ( (int) $expiration ) {
if ( false === get_option( $transient_timeout ) ) {
delete_option( $transient_option );
add_option( $transient_timeout, time() + (int) $expiration, '', 'no' );
$result = add_option( $transient_option, $value, '', 'no' );
$update = false;
} else {
update_option( $transient_timeout, time() + (int) $expiration );
}
}
if ( $update ) {
$result = update_option( $transient_option, $value );
}
}
/**** Ori WP func end ****/
}
elseif ( $group == 'site-transient' ) {
/**** Ori WP func start ****/
$transient_timeout = '_site_transient_timeout_' . $transient;
$option = '_site_transient_' . $transient;
if ( false === get_site_option( $option ) ) {
if ( (int) $expiration )
add_site_option( $transient_timeout, time() + (int) $expiration );
$result = add_site_option( $option, $value );
} else {
if ( (int) $expiration )
update_site_option( $transient_timeout, time() + (int) $expiration );
$result = update_site_option( $option, $value );
}
/**** Ori WP func end ****/
}
else {
$result = null;
}
return $result;
}
/**
* Delete transient from WP table
*
* @since 1.8.3
* @access private
* @see `wp-includes/option.php` function `delete_transient`/`delete_site_transient`
*/
private function _transient_del( $transient, $group ) {
if ( $group == 'transient' ) {
/**** Ori WP func start ****/
$option_timeout = '_transient_timeout_' . $transient;
$option = '_transient_' . $transient;
$result = delete_option( $option );
if ( $result )
delete_option( $option_timeout );
/**** Ori WP func end ****/
}
elseif ( $group == 'site-transient' ) {
/**** Ori WP func start ****/
$option_timeout = '_site_transient_timeout_' . $transient;
$option = '_site_transient_' . $transient;
$result = delete_site_option( $option );
if ( $result )
delete_site_option( $option_timeout );
/**** Ori WP func end ****/
}
}
/**
* Get the current instance object.
*
* @since 1.8
* @access public
*/
public static function get_instance() {
if ( ! isset( self::$_instance ) ) {
self::$_instance = new self();
}
return self::$_instance;
}
}