mainScreen register

<?php
    $wsdl = "http://localhost:8080/TTTWebApplication/TTTWebService?WSDL";
    $trace = true;
    $exceptions = true;
    try {
        $proxy = new SoapClient($wsdl, array('trace' => $trace, 'exceptions' => $exceptions));
?>

        <form>
            <input type="button" value="Login" onclick="" />
        </form>
        <form action="register.php">
            <input name="register" type="submit" value="Register"/>
        </form>

<?php
    } catch (Exception $e) {
        echo $e->getMessage();
    }
?>

<?php
    $wsdl = "http://10.100.106.46:8080/TTTWebApplication/TTTWebService?WSDL";
    $trace = true;
    $exceptions = true;
    try {
        $proxy = new SoapClient($wsdl, array('trace' => $trace, 'exceptions' => $exceptions));

        //form goes here
        echo "
            <form method=\"post\">
                <div>
                    <label>First Name</label>
                    <input type=\"text\" name=\"fname\">
                </div>
                <div>
                    <label>Surname</label>
                    <input type=\"text\" name=\"sname\">
                </div>
                <div>
                    <label>Username</label>
                    <input type=\"text\" name=\"username\">
                </div>
                <div>
                    <label>Password</label>
                    <input type=\"name\" name=\"password\">
                </div>
                <div>
                    <button type=\"submit\" name=\"submit\" value=\"submit\">Create account</button>
                </div>
            </form>
        ";

        echo "
            <p>Already have an account? <a href=\"login.php\">Sign in</a>.</p>
        ";

        if(isset($_POST['submit'])){
            $xml_array["username"]=$_POST["username"];
            $xml_array["password"]=$_POST["password"];
            $xml_array["name"]=$_POST["fname"];
            $xml_array["surname"]=$_POST["sname"];

            $response=$proxy->register($xml_array);
            $val=(string) $response->return;

            if($val=="ERROR-INSERT"|$val=="ERROR-RETRIEVE"|$val="ERROR-DB"|$val="ERROR-REPEAT"){
                //fails
                header("mainScreen.php");
            } else {
                header("mainScreen.php");
            }
            exit;
        }
    } catch (Exception $e) {
        echo $e->getMessage();
    }
?>