crypt cart product

<?php
// Define a 32-byte (64 character) hexadecimal encryption key
// Note: The same encryption key used to encrypt the data must be used to decrypt the data
define('ENCRYPTION_KEY', '75bbd89dcc2878554122f2909d7916873c6bb37dfd5fafee3c26e81c439a88b1');

// Encrypt Function
function mc_encrypt($encrypt, $key){
    $encrypt = json_encode($encrypt);
    //print_r($encrypt);
    $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_DEV_URANDOM);
    $key = pack('H*', $key);
    $mac = hash_hmac('sha256', $encrypt, substr(bin2hex($key), -32));
    $passcrypt = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $encrypt.$mac, MCRYPT_MODE_CBC, $iv);
    $encoded = base64_encode($passcrypt).'|'.base64_encode($iv);
    return $encoded;
}
// Decrypt Function
function mc_decrypt($decrypt, $key){
    $decrypt = explode('|', $decrypt.'|');
    $decoded = base64_decode($decrypt[0]);
    $iv = base64_decode($decrypt[1]);
    if(strlen($iv)!==mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC)){ return false; }
    $key = pack('H*', $key);
    $decrypted = trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $decoded, MCRYPT_MODE_CBC, $iv));
    $mac = substr($decrypted, -64);
    $decrypted = substr($decrypted, 0, -64);
    $calcmac = hash_hmac('sha256', $decrypted, substr(bin2hex($key), -32));
    if($calcmac!==$mac){ return false; }
    $decrypted = json_decode($decrypted);
    return $decrypted;
}

..
value=<?=mc_encrypt(array(
             $id,
             $name,
             ), ENCRYPTION_KEY);?>
$Data=mc_decrypt($Data, ENCRYPTION_KEY);