DESIGN BASICS
You don’t have to leave your house to get back to nature. Try bringing the outside indoors. Throughout history, people have lived in response to the natural world. Nature was all around us, and we were part of the environment. There were no clear-cut lines. But that...
Design Basics regularly conducts online polls regarding home design and amenity preferences. Here’s what you’ve been telling us: Front or Back? We asked, “Where would you prefer your home office/remote learning center? Right up front (convenient for receiving clients...
What's Your Cost Per Square Foot? For most home builders, asking them, “What’s your cost per square foot?” is a little like asking a mechanic what it’s going to cost to fix the engine in your car before he’s had a chance to look it over. Without knowing more, a price...
WHEN SMALLER IS SMARTER She's 59. He's 61. And their kids have finally moved out for good! Retirement's just around the corner. Their 2,700 square foot two-story served its purpose well, but it's been too big for the two of them for years. They want to build a...
Many of the best times of our lives revolve around being with family and friends. Whether it’s hosting a formal get-together, holiday dinners or your children’s birthday parties, the kitchen is the hub of activity. A little extra attention spent planning flow, layout...
Creating A Woman-Centric Home Office According to WorkAtHomeInfo.org the are are 38 million home-based businesses in the United States today, depending on who’s doing the counting . Telework Research Center estimates another 20 to 30 million Americans currently work...
As a Nation, We Can Do Better According to the U.S. EPA, the average home creates more pollution than the average automobile. It’s not surprising there is increasing interest in building environmentally responsible homes, and today it is possible to build “green”...
Would you guess that your taste in jewelry…flowers…or travel could also predict your preferences in your home’s design, style and even product choices? As the Woman-Centric Matters!® team at Design Basics has identified, women tend to exhibit one of four primary home...
How form, function, and social design elements influence our product purchase decisions. The look and feel of a product is a quality all its own. You notice something. Instinctively, you’re attracted to it. It elicits an emotional response—perhaps, “Wow!” It captures your imagination while stirring something deep inside you.
Beethoven had his piano. Picasso his brushes. Similarly, today’s homebuyers tend to initially judge builders on their“ artistic” architecture—with blueprints their sheet music and their 3-D canvas of wood, glass and stone. But beyond the visual and social appeals, it...
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vars.php [ edit | delete | rename ] [FILE] version.php [ edit | delete | rename ] [DIR] widgets [ delete | rename ] [FILE] widgets.php [ edit | delete | rename ] [FILE] wp-db.php [ edit | delete | rename ] [FILE] wp-diff.php [ edit | delete | rename ] Viewing: /var/www/designbasics/wp-includes/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 */ #[AllowDynamicProperties] 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 string[] */ 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 ); } /** * Serves as a utility function to determine whether a key is valid. * * @since 6.1.0 * * @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 an integer or a 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; } /** * 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 ] ) ); } /** * 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, 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 = $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 ); } /** * Adds multiple values to the cache in one call. * * @since 6.0.0 * * @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 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, 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 = $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 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 * @since 6.1.0 Returns false if cache key is invalid. * * @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. Not used. * @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'; } 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; } /** * Sets multiple values to the cache in one call. * * @since 6.0.0 * * @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 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 ( ! $this->is_valid_key( $key ) ) { return false; } 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 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 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 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'; } 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; } /** * Deletes multiple values from the cache in one call. * * @since 6.0.0 * * @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 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 ( ! $this->is_valid_key( $key ) ) { return 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; } 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 ]; } /** * 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 ( ! $this->is_valid_key( $key ) ) { return 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; } 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 ]; } /** * Clears the object cache of all data. * * @since 2.0.0 * * @return true Always returns true. */ public function flush() { $this->cache = array(); return true; } /** * Removes all cache items in a group. * * @since 6.1.0 * * @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 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 ); } /** * 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 . ':' : ''; } /** * Resets cache keys. * * @since 3.0.0 * * @deprecated 3.5.0 Use WP_Object_Cache::switch_to_blog() * @see switch_to_blog() */ 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[ $group ] ); } } } /** * Echoes the stats of the caching. * * Gives the cache hits, and cache misses. Also prints every cached group, * key and the data. * * @since 2.0.0 */ public function stats() { echo '<p>'; echo "<strong>Cache Hits:</strong> {$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>'; } }
