oauth.php

<?php
    $config = parse_ini_file('./.env');

    $url            = 'https://github.com/login/oauth/access_token';
    $clientId       = $config["CLIENT_ID"];
    $clientSecret   = $config["CLIENT_SECRET"];

    $postsFields                = new \stdClass();
    $postsFields->client_id     = $clientId;
    $postsFields->client_secret = $clientSecret;
    $postsFields->code          = $_GET['code'];

    $headers = array(
        'Content-Type: application/json; charset=utf-8',
        'Accept: application/json'
    );

    try {
        $ch = curl_init();

        curl_setopt($ch, CURLOPT_URL, $url);
        curl_setopt($ch, CURLOPT_POST, 1);
        curl_setopt($ch, CURLOPT_POSTFIELDS, json_encode($postsFields));
        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
        //curl_setopt($ch, CURLOPT_NOBODY, 1);

        $response = json_decode(curl_exec($ch));
        $error = curl_error($ch);

        curl_close($ch);
        header("Location: https://".$_SERVER['HTTP_HOST']."/gitpanel/#/checkToken/" . $response->access_token);
        // header("Location: http://localhost:4200/#/checkToken/" . $response->access_token);
    } catch (\Exception $ex) {
        return array();
    }