Untitled

<?php
    $user = $_REQUEST['user'];
    $pass = $_REQUEST['password'];
    $conn = pg_connect("dbname=otwebgw user=$user password=$pass");
    if ($conn) {
        $res = pg_query($conn, 'SELECT version()');
        $dbinfo = pg_fetch_row($result, 0)[0];
        pg_free_result($res);
        pg_close($conn);
    } else {
        $dbinfo = NULL;
    }
?>

<!doctype html>
<html>
    <head>
        <meta charset="utf-8">
        <title>OT web gateway</title>
        <style>
            .info {
                color: #080;
            }
            .error {
                color: #800;
            }
        </style>
    </head>
    <body>
        <?php
            if ($dbinfo !== NULL) {
                echo "<p class=\"info\">$dbinfo</p>"
            } else {
                echo '<p class="error">Authentication error</p>'
            }
        ?>
        <p><a href="/index.php">Back</a></p>
    </body>
</html>