php syntax

manual/codes/Getting started - Record identifiers - Composite.php

 <?php
 class Groupuser extends Doctrine_Record {
     public function setTableDefinition() {
-        $this->hasColumn("user_id", "integer" 20, "primary");
+        $this->hasColumn("user_id", "integer", 20, "primary");
         $this->hasColumn("group_id", "integer", 20, "primary");
     }
 }