Brian Allen Authentic Jersey
roup ) )
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 What the contents in the cache are called.
* @param string $group Optional. Where the cache contents are grouped. Default 'default'.
* @param string $force Optional. Unused. Whether to force a refetch rather than relying on the local
* 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 false|mixed False on failure to retrieve contents or the cache contents on success.
*/
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;
}
/**
* 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 false|int False on failure, the item's new value on success.
*/
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 is 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: {$this->cache_misses}
";
echo "
";
echo '';
foreach ($this->cache as $group => $cache) {
echo "- Group: $group - ( " . number_format( strlen( serialize( $cache ) ) / KB_IN_BYTES, 2 ) . 'k )
';
}
echo '
';
}
/**
* 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 ] ) );
}
/**
* 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() . ':' : '';
/**
* @todo This should be moved to the PHP4 style constructor, PHP5
* already calls __destruct()
*/
register_shutdown_function( array( $this, '__destruct' ) );
}
/**
* Saves the object cache before object is completely destroyed.
*
* Called upon object destruction, which should be when PHP ends.
*
* @since 2.0.8
*
* @return true Always returns true.
*/
public function __destruct() {
return true;
}
}