/**
* Sets a new value if a key has a certain value.
*
* Sets a new value if a key has a certain value. This function only works
* when $old and $new are longs.
*
* @param string $key Key of the value to compare and set.
* @param int $old The value to compare the key against.
* @param int $new The value to set the key to.
*
* @return bool TRUE on success, FALSE on failure.
*/
public function cas($key, $old, $new)
{
return wincache_ucache_cas($this->persistentId . $key, $old, $new);
}
/**
* Store a value in the WinCache object cache, race condition-safe
*
* @param int $casToken Cas token
* @param string $key Cache key
* @param int $value Object to store
* @param int $exptime Expiration time
* @return bool
*/
public function cas($casToken, $key, $value, $exptime = 0)
{
return wincache_ucache_cas($key, $casToken, serialize($value));
}