lithium\storage\cache\adapter\XCache::clear()

Overrides lithium\storage\cache\Adapter::clear()

public method

Clears entire user-space cache by flushing it. All cache keys using the configuration but without honoring the scope are removed.

This method requires valid XCache admin credentials to be set when the adapter was configured, due to the use of the xcache_clear_cache admin method. If the xcache.admin.enable_auth ini setting is set to Off, no credentials required.

The behavior and result when removing a single key during this process fails is unknown.

Returns

boolean

true on successful clearing, false otherwise.

Source

	public function clear() {
		$admin = (ini_get('xcache.admin.enable_auth') === "On");
		if ($admin && (!isset($this->_config['username']) || !isset($this->_config['password']))) {
			return false;
		}
		$credentials = array();

		if (isset($_SERVER['PHP_AUTH_USER'])) {
			$credentials['username'] = $_SERVER['PHP_AUTH_USER'];
			$_SERVER['PHP_AUTH_USER'] = $this->_config['username'];
		}
		if (isset($_SERVER['PHP_AUTH_PW'])) {
			$credentials['password'] = $_SERVER['PHP_AUTH_PW'];
			$_SERVER['PHP_AUTH_PW'] = $this->_config['pass'];
		}

		for ($i = 0, $max = xcache_count(XC_TYPE_VAR); $i < $max; $i++) {
			if (xcache_clear_cache(XC_TYPE_VAR, $i) === false) {
				return false;
			}
		}

		if (isset($_SERVER['PHP_AUTH_USER'])) {
			$_SERVER['PHP_AUTH_USER'] = $credentials['username'];
		}
		if (isset($_SERVER['PHP_AUTH_PW'])) {
			$_SERVER['PHP_AUTH_PW'] = $credentials['password'];
		}
		return true;
	}