Online PHP editor | output for J4E1W

<?php class Encryption { public function decrypt($string) { $output = false; $key = 'myKey';//must be same as of encryption // initialization vector $iv = md5(md5($key)); $output = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5($key), base64_decode($string), MCRYPT_MODE_CBC, $iv); $output = str_replace('\0', '', addslashes(rtrim($output, ""))); return $output; } public function encrypt($string) { $output = false; $key = 'myKey'; // initialization vector $iv = md5(md5($key)); $output = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5($key), $string, MCRYPT_MODE_CBC, $iv); $output = base64_encode($output); return $output; } public function encryptData($input) { $output = trim(base64_encode(base64_encode($input)), '=='); $output = $this->encrypt($input); return $output; } public function decryptData($input) { $output = base64_decode(base64_decode($input)); $output = $this->decrypt($input); return $output; } } $test = new Encryption(); echo $test->encryptData("Narendra")."<br>"; echo $test->decryptData("Narendra");