Passing a javascript variable to a php switch case statement

[lolwut]

The javascript parameter "Step" should trigger a switch-case function in php. If Step is one than trigger this piece of code in php and return the output by JSON. If I take a look in firebug the post string is: \[code\]Step=one&inputFname=rick&inputLname=bovenkamp\[/code\] I think this is correct. So the problem must be in the php file and I think it's in the \[code\]$_POST\[/code\] part...What am I doing wrong? Any help would be very great! javascript code:\[code\]$(document).ready(function() { $("form#userForm").submit(function() { var inputFname = $('#inputFname').attr('value'); var inputLname = $('#inputLname').attr('value'); var Step = "one"; $.ajax({ type: "POST", url: "main.php", data: {Step: Step,inputFname: inputFname,inputLname: inputLname}, dataType: "json", contentType:"application/json; charset=utf-8", success: function(data) { $("p.succesText").html(data.jsCode); $("form#userForm").hide(); $("div.success").fadeIn(); }, error: function(xhr, status, error) { $("form#userForm").hide(); $("p.errorHead").html("Something went wrong."); $("p.errorText").text("ResponseText: " + xhr.responseText + "Statuscode: " + xhr.status + "ReadyState: " + xhr.readyState); $("div.error").fadeIn(); } }); return false; });}); \[/code\]PHP file:\[code\]<?php header('content-type: application/json; charset=utf-8'); $log = array(); $varStep = htmlspecialchars(trim($_POST["Step"])); switch($varStep) { case "one": $varFname = htmlspecialchars($_POST["inputFname"]); $varLname = htmlspecialchars($_POST["inputLname"]); //Make Database connection $db = mysql_connect("192.168.178.254","root","852456"); if(!$db) die("Error connecting to MySQL database."); mysql_select_db("Ajax" ,$db); //Generate code and check if code already exists in the database do { $varCode = rand(10000, 99999); $dbCheckCode = ""; $dbCheckCode = mysql_query("SELECT * FROM TableAjax WHERE code='$varCode'"); } while (mysql_fetch_array($dbCheckCode) !== false); //Save the Form data in the database $sql = "INSERT INTO TableAjax (fname, lname, code) VALUES (".PrepSQL($varFname) . ", " .PrepSQL($varLname) . ", " .PrepSQL($varCode) . ")"; mysql_query($sql); //Return code to frontend $log['jsCode'] = $varCode; break; } echo json_encode($log); //Clean SQL statement function PrepSQL($value) { if(get_magic_quotes_gpc()) { $value = http://stackoverflow.com/questions/10537042/stripslashes($value); } $value ="'" . mysql_real_escape_string($value) . "'"; return($value); } ?>\[/code\]