login.php

<?php
session_start();
require 'config/connect.php';


// Jika Pernah Login
if (isset($_SESSION['uid'])) {
	header('Location:profile.php');
	exit;
}

if ($_SERVER['REQUEST_METHOD']=='POST') {
	$username=$_POST['username'];
	$password=md5($_POST['password']);

	$login =$config->query("SELECT * FROM user FROM username='$username', password='$password'");
	if ($login->num_rows == 1) {
		$result	=$login->fetch_assoc();
		$_SESSION['uid']=$result['id'];

		header('Location:profile.php');
		exit;
	}else{
		echo "Wah Gagal we, cobain lagi gih";
	}
}

?>
<!DOCTYPE html>
<html>
<head>
	<title>Login Page</title>
</head>
<body>
<form action="" method="post">
	<input type="text" name="username"><input type="password" name="password"><button type="submit">Login</button>
</form>
</body>
</html>