rahulguptafullstack/google-2fa-app

This is Google 2FA integration in PHP.

Google Authenticator PHP class

• Author: Rahul Gupta
• Package Used: PHPGangsta https://github.com/PHPGangsta Usage:

---

See following example:

<?php
require_once 'PHPGangsta/GoogleAuthenticator.php';

$ga = new PHPGangsta_GoogleAuthenticator();
$secret = $ga->createSecret();
echo "Secret is: ".$secret."\n\n";

$qrCodeUrl = $ga->getQRCodeGoogleUrl('Blog', $secret);
echo "Google Charts URL for the QR-Code: ".$qrCodeUrl."\n\n";

$oneCode = $ga->getCode($secret);
echo "Checking Code '$oneCode' and Secret '$secret':\n";

$checkResult = $ga->verifyCode($secret, $oneCode, 2);    // 2 = 2*30sec clock tolerance
if ($checkResult) {
    echo 'OK';
} else {
    echo 'FAILED';
}

Running the script provides the following output:

Secret is: TEV6D4UCJF6JRZRX

Google Charts URL for the QR-Code: https://www.google.com/chart?chs=200x200&chld=M|0&cht=qr&chl=otpauth://totp/infoATphpgangsta.de%3Fsecret%3DOQB6ZZGYHCPSX4AK

Checking Code '789569' and Secret 'TEV6D4UCJF6JRZRX':
OK

Installation:

• Use Composer to install the package if vendor folder not found otherwise simply clone the repo and run

• From project root directory execute following

composer install

• Composer will take care of autoloading the library. Just include the following at the top of your file

  require_once __DIR__ . '/../vendor/autoload.php';