<?php

if(isset($_POST["submit"])) {
	$username = $_POST["username"];
	$password = $_POST["password"];

	$result = mysql_query("SELECT * FROM users WHERE username = '".mysql_real_escape_string(trim($username))."'");
	if(mysql_num_rows($result) > 0) {
		$row = mysql_fetch_array($result);

		if($row["password"] == $password) {
			// RIGTIGT
		}else {
			// feeeejl
		}
	} else {
		// forkert brugernavn eller kodeord
	}

}
?>