added stuff in pair programming session

db/datahandler.php

@@ -0,0 +1,48 @@
+<?php
+include($_SERVER['DOCUMENT_ROOT'] . '/models/user.class.php');
+include($_SERVER['DOCUMENT_ROOT'] . '/logic/testinput.php');
+
+class DataHandler
+{
+    public function registerUser($username, $password, $email, $phone, $salutation, $firstname, $lastname, $role, $street, $streetnumber, $postalcode, $country)
+    {
+        $username = testinput($username);
+        $password = testinput($password);
+        $email = testinput($email);
+        $phone = testinput($phone);
+        $salutation = testinput($salutation);
+        $firstname = testinput($firstname);
+        $lastname = testinput($lastname);
+        $role = testinput($role);
+        $street = testinput($street);
+        $streetnumber = testinput($streetnumber);
+        $postalcode = testinput($postalcode);
+        $country = testinput($country);
+
+        require($_SERVER['DOCUMENT_ROOT'] . '/config/setupDBAccess.php');
+        
+        $sql = "INSERT INTO user (username, password, email, phone, salutation, firstname, lastname) VALUES (?,?,?,?,?,?,?)";
+        $sql2 = "INSERT IGNORE INTO cities (postalcode, name) VALUES (?,?)";
+        $sql3 = "INSERT INTO address (street, streetnumber, postalcode, country) VALUES (?,?,?,?)";
+
+        $stmtUser = $db->prepare($sql);
+        $stmtCities = $db->prepare($sql2);
+        $stmtAddress = $db->prepare($sql3);
+
+        $stmtUser->bind_param("sssssss", $username, $password, $email, $phone, $salutation, $firstname, $lastname);
+        $stmtCities->bind_param("ss", $postalcode, $country);
+        $stmtAddress->bind_param("ssss", $street, $streetnumber, $postalcode, $country);
+
+        if ($stmtUser->execute() && $stmtCities->execute() && $stmtAddress->execute()) {
+            return true;
+        } else {
+            return false;
+        }
+        $stmtUser->close();
+        $stmtCities->close();
+        $stmtAddress->close();
+        $db->close();
+        
+    }
+}
+?>