note 40486 added to control-structures

From: Date: Fri, 05 Mar 2004 04:30:57 +0000
Subject: note 40486 added to control-structures
Groups: php.notes 
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Remember that PHP is type free. That means that if you do a comparison with the == operator on 'this string' and the integer value 0, they WILL MATCH! For example: if ('some string' == 0) // THIS WILL MATCH! To avoid this situation, make sure you use the === operator, or cast your variables where needed, like so: if (string($key) == 'some string') //do something; I just spent 20 hours debugging my code because my variable $key was 0 and it evaluated the expression ($key == 'some string') as true! Hope this helps someone. ---- Manual Page -- http://www.php.net/manual/en/control-structures.php Edit -- http://master.php.net/manage/user-notes.php?action=edit+40486 Delete -- http://master.php.net/manage/user-notes.php?action=delete+40486&report=yes Reject -- http://master.php.net/manage/user-notes.php?action=reject+40486&report=yes Search -- http://master.php.net/manage/user-notes.php

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