Some utility functions

diff --git a/class/utils.class.php b/class/utils.class.php
new file mode 100644 (file)
index 0000000..32e182e
--- /dev/null
+++ b/class/utils.class.php
@@ -0,0 +1,52 @@
+<?php
+
+class Utils
+{
+    public static function isAJAX()
+    {
+       if (array_key_exists('HTTP_X_REQUESTED_WITH', $_SERVER) &&
+           $_SERVER['HTTP_X_REQUESTED_WITH'] == 'XMLHttpRequest')
+           return true;
+
+       return false;
+    }
+
+    public static function assertIsoDate($date)
+    {
+       if (strlen($date) > 0) {
+           $datum = explode (".", $date);
+
+           if (count($datum) > 1) {
+               if (strlen($datum[1]) == 0) {
+                   $datum[1] = date ("m");
+               }
+               if (strlen($datum[2]) == 0) {
+                   if ($datum[1] == '12' && date('m') == '1')
+                       $datum[2] = date ("Y", time() - 60*60*24*(date('d')+1));
+                   else
+                       $datum[2] = date ("Y");
+               } elseif (strlen($datum[2]) == 1) {
+                   $datum[2] = "200" . $datum[2];
+               } elseif (strlen($datum[2]) == 2) {
+                   $datum[2] = "20" . $datum[2];
+               }
+
+               $date = $datum[2] . "-" . $datum[1] . "-" . $datum[0];
+           }
+       } else {
+           $date = date("Y-m-d");
+       }
+       return $date;
+    }
+
+    public static function assertGermanDate($datum)
+    {
+       if (strpos($datum, '.') !== false)
+           return $datum;
+
+       $date = explode(" ", $datum);
+       $date = explode("-", $date[0]);
+       $out = sprintf("%d.%d.%d", $date[2], $date[1], $date[0]);
+       return $out;
+    }
+}