PHP7.1 mcrypt alternative

Question

Mcrypt function has been deprecated as of PHP 7.1.0.

My deprecated string encode / decode functions:

$key: secret key
$str: string


$encoded = base6         


        

Answer 1

echo encrypt_openssl($str, $key);

function encrypt_openssl($msg, $key, $iv = null) {
        $iv_size = openssl_cipher_iv_length('AES-256-CBC');
        if (!$iv) {
            $iv = openssl_random_pseudo_bytes($iv_size);
        }
        $encryptedMessage = openssl_encrypt($msg, 'AES-256-CBC', $key, OPENSSL_RAW_DATA, $iv);
        return base64_encode($iv . $encryptedMessage);
    }

mcrypt may be removed in PHP 7.1 alternative openssl