mynamezxc

<?php
// use to generate key : 'openssl rand -hex 32'

function my_encrypt($data, $passphrase) {
    $secret_key = hex2bin($passphrase);
    $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length('aes-256-cbc'));
    $encrypted_64 = openssl_encrypt($data, 'aes-256-cbc', $secret_key, 0, $iv);
    $iv_64 = base64_encode($iv);
    $json = new stdClass();
    $json->iv = $iv_64;

mynamezxc

<?php
/**
 * simple method to encrypt or decrypt a plain text string
 * initialization vector(IV) has to be the same when encrypting and decrypting
 * 
 * @param string $action: can be 'encrypt' or 'decrypt'
 * @param string $string: string to encrypt or decrypt
 *
 * @return string
 */