adding example

git-svn-id: https://svn.php.net/repository/phpdoc/en/trunk@187448 c90b9560-bf6c-de11-be94-00142212c4b1

reference/filesystem/functions/umask.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="iso-8859-1"?>
-<!-- $Revision: 1.8 $ -->
+<!-- $Revision: 1.9 $ -->
 <!-- splitted from ./en/functions/filesystem.xml, last change in rev 1.2 -->
   <refentry id="function.umask">
    <refnamediv>
@@ -31,6 +31,25 @@
       itself because they all use the same umask.
      </para>
     </note>
+    <para>
+     <example>
+      <title><function>umask</function> example</title>
+      <programlisting role="php">
+<![CDATA[
+<?php
+$old = umask(0);
+chmod("/path/some_dir/some_file.txt", 0755);
+umask($old);
+
+// Checking
+if ($old != umask()) {
+    die('An error occured while changing back the umask');
+}
+?>
+]]>
+      </programlisting>
+     </example>
+    </para>
    </refsect1>
   </refentry>