Added all image site exercises

image/image_check_prefix.php

@@ -0,0 +1,10 @@
+<?php
+
+// Controleer of de string begint met 'uploads'
+if(substr($_GET['file'], 0, 7) == 'uploads') {
+    echo file_get_contents('../../' . $_GET['file']);
+} else {
+    echo "Bestand moet in uploads map staan!";
+}
+
+?>