Simple Encrypt and Decrypt

simpleEncrypt.php

<?php

public function decrypt($payload, $password, $iv = null, $method=null){

        if(empty($method)){
            $method = "AES-128-CBC";
        }

        if(empty($iv)){
            $iv = "";
    }
    $decryption = openssl_decrypt($payload, $method, $password, OPENSSL_ZERO_PADDING, $iv);
    $decryption = preg_replace('/[\x00-\x1F\x7F-\xFF]/', '', $decryption);
    return trim($decryption);
}


function my_encrypt($data, $password, $method) {
        // Remove the base64 encoding from our key
        $encryption_key = base64_decode($password);
        
        // Generate an initialization vector
        $iv = openssl_random_pseudo_bytes(openssl_cipher_iv_length($method));
        
        // Encrypt the data using AES 256 encryption in CBC mode using our encryption key and initialization vector.
        $encrypted = openssl_encrypt($data, $method, $encryption_key, 0, $iv);
        
        echo "<br>";
        // The $iv is just as important as the key for decrypting, so save it with our encrypted data using a unique separator (::)
        return [$encrypted, $iv];
        
    }