temp_ temp_ - 2 years ago 411
PHP Question

PHP Firebase help - Set up JWT

On my server I am running a few PHP files that read my Firebase Realtime Database. According to Firebase's documents I need to set up custom token to get my Firebase PHP Client running. The Firebase document says I need to return this;

return JWT::encode($payload, $private_key, "RS256");

How exactly do I reference the JWT class? I downloaded a JWT library but I am not sure how to implement this into my project. Any help would be great, I am mainly a mobile developer and have little experience with PHP.

Answer Source

firebase/php-jwt library uses composer. Composer is a dependency manager for PHP similar to Maven in java if you come from android development background. You would need to know how to import classes in php using require/include functions of php. You would need some experience with php to use composer.

In order to use firebase/php-jwt library without composer you could use the following sample code: (I downloaded the library inside 'jwt' folder)


require_once 'jwt/src/BeforeValidException.php';
require_once 'jwt/src/ExpiredException.php';
require_once 'jwt/src/SignatureInvalidException.php';
require_once 'jwt/src/JWT.php';

use \Firebase\JWT\JWT;

$key = "example_key";
$token = array(
   "iss" => "http://example.org",
   "aud" => "http://example.com",
   "iat" => 1356999524,
   "nbf" => 1357000000

 * You must specify supported algorithms for your application. See
 * https://tools.ietf.org/html/draft-ietf-jose-json-web-algorithms-40
 * for a list of spec-compliant algorithms.
$jwt = JWT::encode($token, $key);
$decoded = JWT::decode($jwt, $key, array('HS256'));


 NOTE: This will now be an object instead of an associative array. To get
 an associative array, you will need to cast it as such:

$decoded_array = (array) $decoded;

* You can add a leeway to account for when there is a clock skew times   between
* the signing and verifying servers. It is recommended that this leeway should
* not be bigger than a few minutes.
* Source: http://self-issued.info/docs/draft-ietf-oauth-json-web-token.html#nbfDef
   JWT::$leeway = 60; // $leeway in seconds
   $decoded = JWT::decode($jwt, $key, array('HS256'));
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