THIS TO ENCRYPT THE DATA

$secret_key = "This is my SeCrEt key";

$etype = MCRYPT_RIJNDAEL_256;

$iv = mcrypt_create_iv(mcrypt_get_iv_size($etype, MCRYPT_MODE_ECB), MCRYPT_RAND);

$output = mcrypt_encrypt($etype, $secret_key, $string_to_encrypt, MCRYPT_MODE_CBC, $iv);

$output = base64_encode ($output);

$output = urlencode($output);

// THIS TO DECRYPT THE DATA - THIS ISN'T WORKING?

$secret_key = "This is my SeCrEt key";

$etype = MCRYPT_RIJNDAEL_256;

$iv = mcrypt_create_iv(mcrypt_get_iv_size($etype, MCRYPT_MODE_ECB), MCRYPT_RAND);

$string_to_decrypt = urldecode($string_to_decrypt);

$string_to_decrypt = base64_decode($string_to_decrypt);

$output = mcrypt_decrypt($etype, $