X-Git-Url: http://git.polytechnique.org/?a=blobdiff_plain;ds=sidebyside;f=include%2Fmisc.inc.php;h=b60045ded495424c0400f9936bf28111572f68d2;hb=c4bcb1697481d3a6549f228739f17dc081641491;hp=e70e6d7985c45f8c538239258a08f7b3c8decbe5;hpb=200302483321518dee3ef9df125e6f968102ecd8;p=platal.git

diff --git a/include/misc.inc.php b/include/misc.inc.php
index e70e6d7..b60045d 100644
--- a/include/misc.inc.php
+++ b/include/misc.inc.php
@@ -1,6 +1,6 @@
 <?php
 /***************************************************************************
- *  Copyright (C) 2003-2010 Polytechnique.org                              *
+ *  Copyright (C) 2003-2011 Polytechnique.org                              *
  *  http://opensource.polytechnique.org/                                   *
  *                                                                         *
  *  This program is free software; you can redistribute it and/or modify   *
@@ -380,6 +380,23 @@ function ends_with($string, $suffix, $caseSensitive = true)
     }
 }
 
+/** Check if the input data can be seen as an integer.
+ */
+function can_convert_to_integer($data)
+{
+    return is_int($data) || ctype_digit($data);
+}
+
+/** Interpret the input data as an integer or return false.
+ */
+function to_integer($data)
+{
+    if (!can_convert_to_integer($data)) {
+        return false;
+    }
+    return intval($data);
+}
+
 
 // vim:set et sw=4 sts=4 sws=4 foldmethod=marker enc=utf-8:
 ?>