<?php

if (isset($_GET['username']) AND isset($_GET['password']))
{
	$bdd = new PDO('mysql:host=localhost;dbname=mybb;charset=utf8', 'root', '');

	$req = $bdd->prepare('SELECT * FROM mybb_user WHERE username = ? LIMIT 1');
	$req->execute(array($_GET['username']));

    if ($account = $req->fetch())
	{
		$hashpass = md5(md5($account['salt']).md5($_GET['password']))
		if ($hashpass == $account['password'])
			echo "ça marche !"
		else
			echo "non"
	}
}

?>

ERREUR -> ( ! ) Parse error: syntax error, unexpected 'if' (T_IF) in C:\wamp64\www\onAccount.php on line 13