backends/apc.php (view raw)
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<?php
if (!class_exists('WP_FFPC_Backend_apc')):
class WP_FFPC_Backend_apc extends WP_FFPC_Backend {
/**
* init apc backend: test APC availability and set alive status
*/
protected function _init () {
/* verify apc functions exist, apc extension is loaded */
if ( ! function_exists( 'apc_cache_info' ) ) {
$this->log ( __translate__('APC extension missing', 'wp-ffpc' ) );
return false;
}
/* verify apc is working */
if ( apc_cache_info("user",true) ) {
$this->log ( __translate__('backend OK', 'wp-ffpc' ) );
$this->alive = true;
}
}
/**
* health checker for APC
*
* @return boolean Aliveness status
*
*/
protected function _status () {
$this->status = true;
return $this->alive;
}
/**
* get function for APC backend
*
* @param string $key Key to get values for
*
* @return mixed Fetched data based on key
*
*/
protected function _get ( &$key ) {
return apc_fetch( $key );
}
/**
* Set function for APC backend
*
* @param string $key Key to set with
* @param mixed $data Data to set
*
* @return boolean APC store outcome
*/
protected function _set ( &$key, &$data, &$expire ) {
return apc_store( $key , $data , $expire );
}
/**
* Flushes APC user entry storage
*
* @return boolean APC flush outcome status
*
*/
protected function _flush ( ) {
return apc_clear_cache('user');
}
/**
* Removes entry from APC or flushes APC user entry storage
*
* @param mixed $keys Keys to clear, string or array
*/
protected function _clear ( &$keys ) {
/* make an array if only one string is present, easier processing */
if ( !is_array ( $keys ) )
$keys = array ( $keys => true );
foreach ( $keys as $key => $dummy ) {
if ( ! apc_delete ( $key ) ) {
$this->log ( sprintf( __translate__( 'Failed to delete APC entry: %s', 'wp-ffpc' ), $key ), LOG_WARNING );
//throw new Exception ( __translate__('Deleting APC entry failed with key ', $this->plugin_constant ) . $key );
}
else {
$this->log ( sprintf( __translate__( 'APC entry delete: %s', 'wp-ffpc' ), $key ) );
}
}
}
}
endif;
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