Hash (encode/decode) test by a key

Cipher.php

<?php

/**
 * Cipher Class
 *
 * Ciphers text by user defined key.
 * @date 2013-11-21
 * @require php5-mcrypt
 * @http://www.php.net/manual/en/function.mcrypt-encrypt.php#78531
 * @http://stackoverflow.com/questions/1289061/best-way-to-use-php-to-encrypt-and-decrypt-passwords
 */
class Cipher
{
	private $securekey, $iv;
	private $defaultTextKey='myPrivKey!';
	function __construct($textkey=null)
	{
		if(isset($textkey))
			$textkey=$this->defaultTextKey;

		$this->securekey=hash('sha256', $textkey, TRUE);
		//$this->iv=mcrypt_create_iv(32); // make slow script to generating it
		$this->iv=mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC),MCRYPT_DEV_URANDOM);
	}
	function encrypt($input)
	{
		return base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $this->securekey, $input, MCRYPT_MODE_ECB, $this->iv));
	}
	function decrypt($input)
	{
		return trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $this->securekey, base64_decode($input), MCRYPT_MODE_ECB, $this->iv));
	}
}

?>