src/AbstractPdo.php
/**
     * Purges expired items.
     *
     * @param  integer|null $add Extra time in second to add.
     * @return boolean      Returns True on success or False on failure.
     */
Purges expired items.
@param  integer|null $add Extra time in second to add.
@return boolean      Returns True on success or False on failure.
Purges expired items . @param integer|null $add Extra time in second to add . @return boolean Returns True on success or False on failure .
public function purge($add=null)
    {
        $time = null == $add ? time() : time()+$add;
        return (boolean) $this->adapter->exec($this->getSql('purge', $time));
    }
public function purge ( $ add = null ) { $ time = null == $ add ? time ( ) : time ( ) + $ add ; return ( boolean ) $ this -> adapter -> exec ( $ this -> getSql ( 'purge' , $ time ) ) ; }
Purges expired items.
Purges expired items .