Simple encrypt

Encrypter.php

<?php

namespace App\Service;

class Encrypter
{
    private const METHOD = 'aes-256-cbc';
    private const DELIMITER = '::';
    private const WRONG_ENCRYPT_SYMBOLS = ['+','/','='];
    private const CORRECT_ENCRYPT_SYMBOLS = ['-','_',''];
    private const WRONG_DECRYPT_SYMBOLS = ['+','/'];
    private const CORRECT_DECRYPT_SYMBOLS = ['-','_'];

    /**
     * @var string
     */
    private $secret;

    public function __construct(string $secret)
    {
        $this->secret = $secret;
    }

    public function encrypt(string $data): string
    {
        $length = openssl_cipher_iv_length(self::METHOD);
        $iv = random_bytes($length);
        $encrypted = openssl_encrypt($data, self::METHOD, $this->secret, 0, $iv);

        $stringToEncode  = $encrypted.self::DELIMITER.$iv;

        return str_replace(self::WRONG_ENCRYPT_SYMBOLS, self::CORRECT_ENCRYPT_SYMBOLS, base64_encode($stringToEncode));
    }

    public function decrypt(string $data): string
    {
        $normalizeData = str_replace(self::CORRECT_DECRYPT_SYMBOLS, self::WRONG_DECRYPT_SYMBOLS, $data);

        [$encrypted, $iv] = explode(self::DELIMITER, base64_decode($normalizeData), 2);

        return openssl_decrypt($encrypted, self::METHOD, $this->secret, 0, $iv);
    }
}

For Symfony

AppBundle\Service\Encrypter:
        arguments: ["%secret%"]