note 11770 added to usort

From: Date: Tue, 06 Mar 2001 15:36:58 +0000
Subject: note 11770 added to usort
Groups: php.notes 
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at first thanx for "\$this->whatever" , but what means Warning: Wrong datatype in usort() call ... ???? doesn't it like the array ? http://www.php.net/manual/en/function.usort.php

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