<?php
	include("conn.php");

	if(isset($_POST['username']))
	{
		$username = $_POST["username"];
		$password = $_POST["password"];
		$firstname = $_POST["firstname"];
		$middlename= $_POST["middlename"];
		$lastname= $_POST["lastname"];

		$sql = "SELECT username, password FROM tbl_account";

		$result = mysqli_query($conn, $sql);
		if(mysqli_num_rows($result) > 0)
		{
			while($row = mysqli_fetch_assoc($result))
			{
			if($username == $row["username"] && sha1($password) == $row["password"] && $firstname == $row["firstname"] && $middlename == $row["middlename" && $lastname == $row["lastname"])
				{
					header("location: ../");
				}
			}
		}
	}
?>