PHP page to authenticate using oauth and pull information about a users with the Github API.

php-github-oath

<?php
 
$randint = mt_rand();
$client_id = '<app ID goes here>';
$client_secret = '<app secret goes here>';
 
if ($_GET['code']) {
  $code = $_GET['code'];
  $state = $_GET['state'];
	$url = 'https://github.com/login/oauth/access_token';
	$vars = 'client_id=' . $client_id . '&client_secret=' . $client_secret . '&code=' . $code . '&state=' . $state;
 
	$ch = curl_init( $url );
	curl_setopt( $ch, CURLOPT_POST, 1);
	curl_setopt( $ch, CURLOPT_POSTFIELDS, $vars);
	curl_setopt( $ch, CURLOPT_FOLLOWLOCATION, 1);
	curl_setopt( $ch, CURLOPT_HEADER, 0);
	curl_setopt( $ch, CURLOPT_RETURNTRANSFER, 1);
 
	$response = curl_exec( $ch );
	curl_close($ch);
 
	parse_str($response,$output);
	$token = $output['access_token'];
 
	$ch = curl_init();
	$options = array(CURLOPT_URL => 'https://api.github.com/user?access_token=' . $token,
	                 CURLOPT_SSL_VERIFYPEER => false,
	                 CURLOPT_RETURNTRANSFER => true
	                );
	curl_setopt_array($ch, $options);
	$user = json_decode(curl_exec($ch));
	curl_close($ch);
 
	echo $output['access_token'] . '<br />';
	echo $user->login . '<br />';
	echo $user->email . '<br />';
	echo $user->location . '<br />';
 
} else {
	echo 'Start Over';
}
 
?>
 
<a href="https://github.com/login/oauth/authorize?client_id=5ff0b1ffdc460dcc4eab&state=<?php echo $randint;?>">Login</a>