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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_runtime()
*
* @return bool True on success, false on failure.
*/
function wp_cache_flush_runtime()
{
global $wp_object_cache;
return $wp_object_cache->flush_runtime();
}
/**
* 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':
return true;
case 'flush_group':
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 $this->incr_desr($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 $this->incr_desr($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->flush_runtime();
$this->_object_cache->flush();
return true;
}
/**
* Removes all cache items from the in-memory runtime cache.
*
* @since 5.4
* @access public
*
* @return true Always returns true.
*/
public function flush_runtime()
{
$this->_cache = array();
$this->_cache_404 = array();
return true;
}
/**
* Removes all cache items in a group.
*
* @since 5.4
* @access public
*
* @param string $group Name of group to remove from cache.
* @return true Always returns true.
*/
public function flush_group($group)
{
// unset( $this->cache[ $group ] );
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;
}
}