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Name	Size	Permission
ID3	[ DIR ]	drwxrwxrwx
IXR	[ DIR ]	drwxrwxrwx
PHPMailer	[ DIR ]	drwxrwxrwx
Requests	[ DIR ]	drwxrwxrwx
SimplePie	[ DIR ]	drwxrwxrwx
Text	[ DIR ]	drwxrwxrwx
assets	[ DIR ]	drwxrwxrwx
block-patterns	[ DIR ]	drwxrwxrwx
block-supports	[ DIR ]	drwxrwxrwx
blocks	[ DIR ]	drwxrwxrwx
certificates	[ DIR ]	drwxrwxrwx
css	[ DIR ]	drwxrwxrwx
customize	[ DIR ]	drwxrwxrwx
fonts	[ DIR ]	drwxrwxrwx
images	[ DIR ]	drwxrwxrwx
js	[ DIR ]	drwxrwxrwx
pomo	[ DIR ]	drwxrwxrwx
random_compat	[ DIR ]	drwxrwxrwx
rest-api	[ DIR ]	drwxrwxrwx
sitemaps	[ DIR ]	drwxrwxrwx
sodium_compat	[ DIR ]	drwxrwxrwx
theme-compat	[ DIR ]	drwxrwxrwx
widgets	[ DIR ]	drwxrwxrwx
.DS_Store	10 KB	-rwxrwxrwx
.wp-includes.php	3.61 KB	-rw-r--r--
admin-bar.php	31.6 KB	-rwxrwxrwx
atomlib.php	11.67 KB	-rwxrwxrwx
author-template.php	16.63 KB	-rwxrwxrwx
block-editor.php	16.6 KB	-rwxrwxrwx
block-patterns.php	2.6 KB	-rwxrwxrwx
block-template-utils.php	3.67 KB	-rwxrwxrwx
block-template.php	6.89 KB	-rwxrwxrwx
blocks.php	35.68 KB	-rwxrwxrwx
bookmark-template.php	12.42 KB	-rwxrwxrwx
bookmark.php	14.97 KB	-rwxrwxrwx
cache-compat.php	1.02 KB	-rwxrwxrwx
cache.php	9.29 KB	-rwxrwxrwx
canonical.php	32.31 KB	-rwxrwxrwx
capabilities.php	34.92 KB	-rwxrwxrwx
category-template.php	54.26 KB	-rwxrwxrwx
category.php	12.41 KB	-rwxrwxrwx
class-IXR.php	2.48 KB	-rwxrwxrwx
class-feed.php	529 B	-rwxrwxrwx
class-http.php	38.78 KB	-rwxrwxrwx
class-json.php	42.42 KB	-rwxrwxrwx
class-oembed.php	407 B	-rwxrwxrwx
class-phpass.php	6.54 KB	-rwxrwxrwx
class-phpmailer.php	664 B	-rwxrwxrwx
class-pop3.php	20.35 KB	-rwxrwxrwx
class-requests.php	29.72 KB	-rwxrwxrwx
class-simplepie.php	94.01 KB	-rwxrwxrwx
class-smtp.php	457 B	-rwxrwxrwx
class-snoopy.php	36.83 KB	-rwxrwxrwx
class-walker-category-dropdown...	2.08 KB	-rwxrwxrwx
class-walker-category.php	7.71 KB	-rwxrwxrwx
class-walker-comment.php	13.41 KB	-rwxrwxrwx
class-walker-nav-menu.php	8.44 KB	-rwxrwxrwx
class-walker-page-dropdown.php	2.25 KB	-rwxrwxrwx
class-walker-page.php	6.88 KB	-rwxrwxrwx
class-wp-admin-bar.php	16.59 KB	-rwxrwxrwx
class-wp-ajax-response.php	5.12 KB	-rwxrwxrwx
class-wp-application-passwords...	10.38 KB	-rwxrwxrwx
class-wp-block-editor-context....	890 B	-rwxrwxrwx
class-wp-block-list.php	4.37 KB	-rwxrwxrwx
class-wp-block-parser.php	14.86 KB	-rwxrwxrwx
class-wp-block-pattern-categor...	4.19 KB	-rwxrwxrwx
class-wp-block-patterns-regist...	4.43 KB	-rwxrwxrwx
class-wp-block-styles-registry...	4.6 KB	-rwxrwxrwx
class-wp-block-supports.php	5.15 KB	-rwxrwxrwx
class-wp-block-template.php	1.18 KB	-rwxrwxrwx
class-wp-block-type-registry.p...	4.53 KB	-rwxrwxrwx
class-wp-block-type.php	8.95 KB	-rwxrwxrwx
class-wp-block.php	6.61 KB	-rwxrwxrwx
class-wp-comment-query.php	44.42 KB	-rwxrwxrwx
class-wp-comment.php	9.1 KB	-rwxrwxrwx
class-wp-customize-control.php	25.07 KB	-rwxrwxrwx
class-wp-customize-manager.php	196.48 KB	-rwxrwxrwx
class-wp-customize-nav-menus.p...	55.44 KB	-rwxrwxrwx
class-wp-customize-panel.php	10.16 KB	-rwxrwxrwx
class-wp-customize-section.php	10.72 KB	-rwxrwxrwx
class-wp-customize-setting.php	29.07 KB	-rwxrwxrwx
class-wp-customize-widgets.php	69.52 KB	-rwxrwxrwx
class-wp-date-query.php	34.02 KB	-rwxrwxrwx
class-wp-dependency.php	2.45 KB	-rwxrwxrwx
class-wp-editor.php	69.54 KB	-rwxrwxrwx
class-wp-embed.php	15.58 KB	-rwxrwxrwx
class-wp-error.php	7.13 KB	-rwxrwxrwx
class-wp-fatal-error-handler.p...	7.4 KB	-rwxrwxrwx
class-wp-feed-cache-transient....	2.5 KB	-rwxrwxrwx
class-wp-feed-cache.php	970 B	-rwxrwxrwx
class-wp-hook.php	14.65 KB	-rwxrwxrwx
class-wp-http-cookie.php	7.02 KB	-rwxrwxrwx
class-wp-http-curl.php	12.06 KB	-rwxrwxrwx
class-wp-http-encoding.php	6.5 KB	-rwxrwxrwx
class-wp-http-ixr-client.php	3.39 KB	-rwxrwxrwx
class-wp-http-proxy.php	5.73 KB	-rwxrwxrwx
class-wp-http-requests-hooks.p...	1.93 KB	-rwxrwxrwx
class-wp-http-requests-respons...	4.24 KB	-rwxrwxrwx
class-wp-http-response.php	2.88 KB	-rwxrwxrwx
class-wp-http-streams.php	15.74 KB	-rwxrwxrwx
class-wp-image-editor-gd.php	15.15 KB	-rwxrwxrwx
class-wp-image-editor-imagick....	26.24 KB	-rwxrwxrwx
class-wp-image-editor.php	16.2 KB	-rwxrwxrwx
class-wp-list-util.php	6.79 KB	-rwxrwxrwx
class-wp-locale-switcher.php	4.9 KB	-rwxrwxrwx
class-wp-locale.php	13.65 KB	-rwxrwxrwx
class-wp-matchesmapregex.php	1.76 KB	-rwxrwxrwx
class-wp-meta-query.php	27.19 KB	-rwxrwxrwx
class-wp-metadata-lazyloader.p...	5.23 KB	-rwxrwxrwx
class-wp-network-query.php	18.72 KB	-rwxrwxrwx
class-wp-network.php	12.09 KB	-rwxrwxrwx
class-wp-object-cache.php	13.23 KB	-rwxrwxrwx
class-wp-oembed-controller.php	6.67 KB	-rwxrwxrwx
class-wp-oembed.php	29.61 KB	-rwxrwxrwx
class-wp-paused-extensions-sto...	4.81 KB	-rwxrwxrwx
class-wp-post-type.php	20.33 KB	-rwxrwxrwx
class-wp-post.php	6.27 KB	-rwxrwxrwx
class-wp-query.php	131.63 KB	-rwxrwxrwx
class-wp-recovery-mode-cookie-...	6.31 KB	-rwxrwxrwx
class-wp-recovery-mode-email-s...	10.41 KB	-rwxrwxrwx
class-wp-recovery-mode-key-ser...	4.17 KB	-rwxrwxrwx
class-wp-recovery-mode-link-se...	3.32 KB	-rwxrwxrwx
class-wp-recovery-mode.php	11.11 KB	-rwxrwxrwx
class-wp-rewrite.php	61.37 KB	-rwxrwxrwx
class-wp-role.php	2.44 KB	-rwxrwxrwx
class-wp-roles.php	8.23 KB	-rwxrwxrwx
class-wp-session-tokens.php	7.25 KB	-rwxrwxrwx
class-wp-simplepie-file.php	3.18 KB	-rwxrwxrwx
class-wp-simplepie-sanitize-ks...	1.73 KB	-rwxrwxrwx
class-wp-site-query.php	28.62 KB	-rwxrwxrwx
class-wp-site.php	7.25 KB	-rwxrwxrwx
class-wp-tax-query.php	18.81 KB	-rwxrwxrwx
class-wp-taxonomy.php	13.03 KB	-rwxrwxrwx
class-wp-term-query.php	36.39 KB	-rwxrwxrwx
class-wp-term.php	5.15 KB	-rwxrwxrwx
class-wp-text-diff-renderer-in...	716 B	-rwxrwxrwx
class-wp-text-diff-renderer-ta...	16.4 KB	-rwxrwxrwx
class-wp-theme-json-resolver.p...	11.2 KB	-rwxrwxrwx
class-wp-theme-json.php	32.95 KB	-rwxrwxrwx
class-wp-theme.php	50.11 KB	-rwxrwxrwx
class-wp-user-meta-session-tok...	2.92 KB	-rwxrwxrwx
class-wp-user-query.php	30.6 KB	-rwxrwxrwx
class-wp-user-request.php	2.14 KB	-rwxrwxrwx
class-wp-user.php	21.67 KB	-rwxrwxrwx
class-wp-walker.php	12.43 KB	-rwxrwxrwx
class-wp-widget-factory.php	3.24 KB	-rwxrwxrwx
class-wp-widget.php	17.73 KB	-rwxrwxrwx
class-wp-xmlrpc-server.php	207.93 KB	-rwxrwxrwx
class-wp.php	24.5 KB	-rwxrwxrwx
class.wp-dependencies.php	12.57 KB	-rwxrwxrwx
class.wp-scripts.php	18.49 KB	-rwxrwxrwx
class.wp-styles.php	10.62 KB	-rwxrwxrwx
comment-template.php	92.73 KB	-rwxrwxrwx
comment.php	122.81 KB	-rwxrwxrwx
compat.php	11.8 KB	-rwxrwxrwx
cron.php	39.69 KB	-rwxrwxrwx
date.php	406 B	-rwxrwxrwx
default-constants.php	10.02 KB	-rwxrwxrwx
default-filters.php	29.29 KB	-rwxrwxrwx
default-widgets.php	2.17 KB	-rwxrwxrwx
deprecated.php	121.9 KB	-rwxrwxrwx
embed-template.php	341 B	-rwxrwxrwx
embed.php	46.96 KB	-rwxrwxrwx
error-protection.php	4.02 KB	-rwxrwxrwx
feed-atom-comments.php	5.32 KB	-rwxrwxrwx
feed-atom.php	3.03 KB	-rwxrwxrwx
feed-rdf.php	2.61 KB	-rwxrwxrwx
feed-rss.php	1.16 KB	-rwxrwxrwx
feed-rss2-comments.php	3.97 KB	-rwxrwxrwx
feed-rss2.php	3.71 KB	-rwxrwxrwx
feed.php	22.43 KB	-rwxrwxrwx
formatting.php	318.97 KB	-rwxrwxrwx
functions.php	247.19 KB	-rwxrwxrwx
functions.wp-scripts.php	13.11 KB	-rwxrwxrwx
functions.wp-styles.php	8.11 KB	-rwxrwxrwx
general-template.php	154.5 KB	-rwxrwxrwx
http.php	21.86 KB	-rwxrwxrwx
https-detection.php	6.71 KB	-rwxrwxrwx
https-migration.php	4.62 KB	-rwxrwxrwx
kses.php	62.39 KB	-rwxrwxrwx
l10n.php	55.41 KB	-rwxrwxrwx
link-template.php	145.19 KB	-rwxrwxrwx
load.php	48.87 KB	-rwxrwxrwx
locale.php	162 B	-rwxrwxrwx
media-template.php	58.99 KB	-rwxrwxrwx
media.php	173.93 KB	-rwxrwxrwx
meta.php	58.72 KB	-rwxrwxrwx
ms-blogs.php	24.58 KB	-rwxrwxrwx
ms-default-constants.php	4.6 KB	-rwxrwxrwx
ms-default-filters.php	6.34 KB	-rwxrwxrwx
ms-deprecated.php	20.63 KB	-rwxrwxrwx
ms-files.php	2.58 KB	-rwxrwxrwx
ms-functions.php	91.7 KB	-rwxrwxrwx
ms-load.php	19.32 KB	-rwxrwxrwx
ms-network.php	3.58 KB	-rwxrwxrwx
ms-settings.php	4.03 KB	-rwxrwxrwx
ms-site.php	38.66 KB	-rwxrwxrwx
nav-menu-template.php	22.75 KB	-rwxrwxrwx
nav-menu.php	41.19 KB	-rwxrwxrwx
option.php	74.77 KB	-rwxrwxrwx
pluggable-deprecated.php	6.12 KB	-rwxrwxrwx
pluggable.php	101.48 KB	-rwxrwxrwx
plugin.php	32.34 KB	-rwxrwxrwx
post-formats.php	6.91 KB	-rwxrwxrwx
post-template.php	63.25 KB	-rwxrwxrwx
post-thumbnail-template.php	9.13 KB	-rwxrwxrwx
post.php	258.3 KB	-rwxrwxrwx
query.php	34.94 KB	-rwxrwxrwx
registration-functions.php	200 B	-rwxrwxrwx
registration.php	200 B	-rwxrwxrwx
rest-api.php	91.19 KB	-rwxrwxrwx
revision.php	22.01 KB	-rwxrwxrwx
rewrite.php	18.76 KB	-rwxrwxrwx
robots-template.php	5.05 KB	-rwxrwxrwx
rss-functions.php	255 B	-rwxrwxrwx
rss.php	22.44 KB	-rwxrwxrwx
script-loader.php	105.92 KB	-rwxrwxrwx
session.php	258 B	-rwxrwxrwx
shortcodes.php	20.93 KB	-rwxrwxrwx
sitemaps.php	3.16 KB	-rwxrwxrwx
spl-autoload-compat.php	441 B	-rwxrwxrwx
taxonomy.php	164.21 KB	-rwxrwxrwx
template-canvas.php	594 B	-rwxrwxrwx
template-loader.php	2.94 KB	-rwxrwxrwx
template.php	21.96 KB	-rwxrwxrwx
theme-i18n.json	634 B	-rwxrwxrwx
theme-templates.php	4.61 KB	-rwxrwxrwx
theme.json	5.2 KB	-rwxrwxrwx
theme.php	122.45 KB	-rwxrwxrwx
update.php	29.33 KB	-rwxrwxrwx
user.php	151.56 KB	-rwxrwxrwx
vars.php	5.68 KB	-rwxrwxrwx
version.php	766 B	-rwxrwxrwx
widgets.php	65.7 KB	-rwxrwxrwx
wlwmanifest.xml	1.02 KB	-rwxrwxrwx
wp-db.php	103.61 KB	-rwxrwxrwx
wp-diff.php	647 B	-rwxrwxrwx

Code Editor : class-wp-object-cache.php

<?php
/**
 * Object Cache API: WP_Object_Cache class
 *
 * @package WordPress
 * @subpackage Cache
 * @since 5.4.0
 */

/**
 * Core class that implements an object cache.
 *
 * The WordPress Object Cache is used to save on trips to the database. The
 * Object Cache stores all of the cache data to memory and makes the cache
 * contents available by using a key, which is used to name and later retrieve
 * the cache contents.
 *
 * The Object Cache can be replaced by other caching mechanisms by placing files
 * in the wp-content folder which is looked at in wp-settings. If that file
 * exists, then this file will not be included.
 *
 * @since 2.0.0
 */
class WP_Object_Cache {

/**
	 * Holds the cached objects.
	 *
	 * @since 2.0.0
	 * @var array
	 */
	private $cache = array();

/**
	 * The amount of times the cache data was already stored in the cache.
	 *
	 * @since 2.5.0
	 * @var int
	 */
	public $cache_hits = 0;

/**
	 * Amount of times the cache did not have the request in cache.
	 *
	 * @since 2.0.0
	 * @var int
	 */
	public $cache_misses = 0;

/**
	 * List of global cache groups.
	 *
	 * @since 3.0.0
	 * @var array
	 */
	protected $global_groups = array();

/**
	 * The blog prefix to prepend to keys in non-global groups.
	 *
	 * @since 3.5.0
	 * @var string
	 */
	private $blog_prefix;

/**
	 * Holds the value of is_multisite().
	 *
	 * @since 3.5.0
	 * @var bool
	 */
	private $multisite;

/**
	 * Sets up object properties; PHP 5 style constructor.
	 *
	 * @since 2.0.8
	 */
	public function __construct() {
		$this->multisite   = is_multisite();
		$this->blog_prefix = $this->multisite ? get_current_blog_id() . ':' : '';
	}

/**
	 * Makes private properties readable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @param string $name Property to get.
	 * @return mixed Property.
	 */
	public function __get( $name ) {
		return $this->$name;
	}

/**
	 * Makes private properties settable for backward compatibility.
	 *
	 * @since 4.0.0
	 *
	 * @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 4.0.0
	 *
	 * @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 4.0.0
	 *
	 * @param string $name Property to unset.
	 */
	public function __unset( $name ) {
		unset( $this->$name );
	}

/**
	 * Adds data to the cache if it doesn't already exist.
	 *
	 * @since 2.0.0
	 *
	 * @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. 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 ( empty( $group ) ) {
			$group = 'default';
		}

$id = $key;
		if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$id = $this->blog_prefix . $key;
		}

if ( $this->_exists( $id, $group ) ) {
			return false;
		}

return $this->set( $key, $data, $group, (int) $expire );
	}

/**
	 * Sets the list of global cache groups.
	 *
	 * @since 3.0.0
	 *
	 * @param string|string[] $groups List of groups that are global.
	 */
	public function add_global_groups( $groups ) {
		$groups = (array) $groups;

$groups              = array_fill_keys( $groups, true );
		$this->global_groups = array_merge( $this->global_groups, $groups );
	}

/**
	 * Decrements numeric cache item's value.
	 *
	 * @since 3.3.0
	 *
	 * @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' ) {
		if ( empty( $group ) ) {
			$group = 'default';
		}

if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;
		}

if ( ! $this->_exists( $key, $group ) ) {
			return false;
		}

if ( ! is_numeric( $this->cache[ $group ][ $key ] ) ) {
			$this->cache[ $group ][ $key ] = 0;
		}

$offset = (int) $offset;

$this->cache[ $group ][ $key ] -= $offset;

if ( $this->cache[ $group ][ $key ] < 0 ) {
			$this->cache[ $group ][ $key ] = 0;
		}

return $this->cache[ $group ][ $key ];
	}

/**
	 * 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 2.0.0
	 *
	 * @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 False if the contents weren't deleted and true on success.
	 */
	public function delete( $key, $group = 'default', $deprecated = false ) {
		if ( empty( $group ) ) {
			$group = 'default';
		}

if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;
		}

if ( ! $this->_exists( $key, $group ) ) {
			return false;
		}

unset( $this->cache[ $group ][ $key ] );
		return true;
	}

/**
	 * Clears the object cache of all data.
	 *
	 * @since 2.0.0
	 *
	 * @return true Always returns true.
	 */
	public function flush() {
		$this->cache = array();

return true;
	}

/**
	 * 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 2.0.0
	 *
	 * @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 ( empty( $group ) ) {
			$group = 'default';
		}

if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;
		}

if ( $this->_exists( $key, $group ) ) {
			$found             = true;
			$this->cache_hits += 1;
			if ( is_object( $this->cache[ $group ][ $key ] ) ) {
				return clone $this->cache[ $group ][ $key ];
			} else {
				return $this->cache[ $group ][ $key ];
			}
		}

$found               = false;
		$this->cache_misses += 1;
		return false;
	}

/**
	 * Retrieves multiple values from the cache in one call.
	 *
	 * @since 5.5.0
	 *
	 * @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 values organized into groups.
	 */
	public function get_multiple( $keys, $group = 'default', $force = false ) {
		$values = array();

foreach ( $keys as $key ) {
			$values[ $key ] = $this->get( $key, $group, $force );
		}

return $values;
	}

/**
	 * Increments numeric cache item's value.
	 *
	 * @since 3.3.0
	 *
	 * @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' ) {
		if ( empty( $group ) ) {
			$group = 'default';
		}

if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;
		}

if ( ! $this->_exists( $key, $group ) ) {
			return false;
		}

if ( ! is_numeric( $this->cache[ $group ][ $key ] ) ) {
			$this->cache[ $group ][ $key ] = 0;
		}

$offset = (int) $offset;

$this->cache[ $group ][ $key ] += $offset;

if ( $this->cache[ $group ][ $key ] < 0 ) {
			$this->cache[ $group ][ $key ] = 0;
		}

return $this->cache[ $group ][ $key ];
	}

/**
	 * Replaces the contents in the cache, if contents already exist.
	 *
	 * @since 2.0.0
	 *
	 * @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. Default 0 (no expiration).
	 * @return bool False if not exists, true if contents were replaced.
	 */
	public function replace( $key, $data, $group = 'default', $expire = 0 ) {
		if ( empty( $group ) ) {
			$group = 'default';
		}

$id = $key;
		if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$id = $this->blog_prefix . $key;
		}

if ( ! $this->_exists( $id, $group ) ) {
			return false;
		}

return $this->set( $key, $data, $group, (int) $expire );
	}

/**
	 * Resets cache keys.
	 *
	 * @since 3.0.0
	 *
	 * @deprecated 3.5.0 Use switch_to_blog()
	 * @see switch_to_blog()
	 */
	public function reset() {
		_deprecated_function( __FUNCTION__, '3.5.0', '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 ] );
			}
		}
	}

/**
	 * 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 2.0.0
	 *
	 * @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 Not Used.
	 * @return true Always returns true.
	 */
	public function set( $key, $data, $group = 'default', $expire = 0 ) {
		if ( empty( $group ) ) {
			$group = 'default';
		}

if ( $this->multisite && ! isset( $this->global_groups[ $group ] ) ) {
			$key = $this->blog_prefix . $key;
		}

if ( is_object( $data ) ) {
			$data = clone $data;
		}

$this->cache[ $group ][ $key ] = $data;
		return true;
	}

/**
	 * Echoes the stats of the caching.
	 *
	 * Gives the cache hits, and cache misses. Also prints every cached group,
	 * key and the data.
	 *
	 * @since 2.0.0
	 */
	public function stats() {
		echo '';
		echo "Cache Hits: {$this->cache_hits} ";
		echo "Cache Misses: {$this->cache_misses} ";
		echo '';
		echo '<ul>';
		foreach ( $this->cache as $group => $cache ) {
			echo '<li>Group: ' . esc_html( $group ) . ' - ( ' . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )</li>';
		}
		echo '</ul>';
	}

/**
	 * Switches the internal blog ID.
	 *
	 * This changes the blog ID used to create keys in blog specific groups.
	 *
	 * @since 3.5.0
	 *
	 * @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 . ':' : '';
	}

/**
	 * Serves as a utility function to determine whether a key exists in the cache.
	 *
	 * @since 3.4.0
	 *
	 * @param int|string $key   Cache key to check for existence.
	 * @param string     $group Cache group for the key existence check.
	 * @return bool Whether the key exists in the cache for the given group.
	 */
	protected function _exists( $key, $group ) {
		return isset( $this->cache[ $group ] ) && ( isset( $this->cache[ $group ][ $key ] ) || array_key_exists( $key, $this->cache[ $group ] ) );
	}
}

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Code Editor : class-wp-object-cache.php