added stuff in pair programming session

logic/testinput.php

@@ -0,0 +1,10 @@
+<?php
+
+function testinput($data) {
+    $data = trim($data);
+    $data = stripslashes($data);
+    $data = htmlspecialchars($data);
+    return $data;
+}
+
+?>

logic/userLogic.php

@@ -0,0 +1,45 @@
+<?php
+include( $_SERVER['DOCUMENT_ROOT'] . '/db/datahandler.php' );
+
+class UserLogic
+{
+    private $dh;
+    function __construct()
+    {
+        $this->dh = new DataHandler();
+    }
+
+    function handleUserRequests($method, $data)
+    {
+        switch ($method) {
+            case 'register':
+                return $this->dh->registerUser($data);
+                break;
+                /*
+            case 'login':
+                return $this->loginUser($data);
+                break;
+            case 'logout':
+                return $this->logoutUser($data);
+                break;
+            case 'getUser':
+                return $this->getUser($data);
+                break;
+            case 'getUsers':
+                return $this->getUsers($data);
+                break;
+            case 'updateUser':
+                return $this->updateUser($data);
+                break;
+            case 'deleteUser':
+                return $this->deleteUser($data);
+                break;
+                */
+            default:
+                return false;
+                break;
+        }
+    }
+}
+
+?>