file : define the default value for flags in file_put_contents. It is optional

git-svn-id: https://svn.fournier38.fr/svn/ProgSVN/trunk@3005 bf3deb0d-5f1a-0410-827f-c0cc1f45334c

file.php

@@ -183,12 +183,13 @@ class file
 
   /** Write a string to a file
     * @param string $filename Path to the file where to write the data
-    * @param The data to write
+    * @param string $data The data to write
+    * @param int|null $flags The optional flags
     * @return the length of the data stored
     * @throws If parent directory not exists, is not writeable, or the file
     *         exists and is not writeable
     */
-  public function file_put_contents ($filename, $data, $flags)
+  public function file_put_contents ($filename, $data, $flags=0)
   {
     $this->debug (2, "file_put_contents ($filename)");
     $filename = $this->realpath ($filename);