<?php


//database connection
@$db = mysql_connect('localhost', 'root');
mysql_select_db('bdd_site', $db);


//variable declaration
@$username=$_POST["username"];
@$password=$_POST["password"];
@$enter=$_POST["enter"];
$errors= array();

if (isset($enter)) {
		if (empty($username)){
			array_push($errors, "Username is required");
		}
		if (empty($password)){
			array_push($errors, "Password is required");
		}
	}

if (isset($_POST) && !empty('$username') && !empty('$password')) {
	extract($_POST);
$sql = "select password from table_users where username = '".$username."'";
$requete = mysql_query($sql) or die('Erreur SQL !<br />'.$sql.'<br />'.mysql_error());
}

@$data = mysql_fetch_assoc($requete);

if($data['password'] != $password) {
    echo  "Bad Login/Password";
	exit;
}


function display_error() {
	global $errors;

	if (count($errors) > 0){
		echo '<div class="error">';
			foreach ($errors as $error){
				echo $error .'<br>';
			}
		echo '</div>';
	}
}