<?php
        if (!isset($_GET['login']) || $_GET['login'] != 1):
    ?>
    <form action="index.php?login=1" method="post">
        <fieldset>
            <legend> Login! </legend>
            <label for="username"> Username: </label>
            <input type="text" name="username" />
                <br />
            <label for="password"> Password: </label>
            <input type="password" name="password" />
                <br />
            <input type="submit" value="login!" />

        </fieldset>
    </form>

    <?php
        else:
        $username = $_POST['username'];
        $password = $_POST['password']; //hash it!


        $doc = new DOMDocument();
        $doc->preserveWhiteSpace = false;
        $doc->load("users.xml");

        $usersLoginsNodeList = $doc->documentElement->getElementsByTagName("login");

        for ($i = 0; $i < $usersLoginsNodeList->length; $i++)
        {
            if ($usersLoginsNodeList->item($i)->nodeValue == $username)
            {
                echo $usersLoginsNodeList->item($i)->nodeValue . "<br />";

                $parentNodeId = $usersLoginsNodeList->item($i)->parentNode->getAttribute("id");
                $parentNode = $doc->getElementById($parentNodeId);
                echo $parentNode->nodeValue;
                echo "hey";
                $passwordNode = $parentNode->getElementsById("password")->item(0);
                if ($passwordNode->nodeValue == $password)
                    echo "PASS: " . $passwordNode->nodeValue;

                break;
            }
        }


        endif;

    ?>