note 14019 added to functions.php

From: Date: Fri, 13 Jul 2001 16:34:05 +0000
Subject: note 14019 added to functions.php
Groups: php.notes 
Request: Send a blank email to php-notes+get-15331@lists.php.net to get a copy of this message
In the above example (by bart@framers.nl), the question is (indirectly) posed of how to differentiate "" and 0 from the boolean true and false. PHP does this with the !== and === operators. These check for both (in)equality on value AND type. So the example code could read if (($somevar = foo()) !== false) { do_something_on_success(); } and it would work as wanted (only in PHP 4, though). This is documented in language.operators.comparison.php so I suppose no real reason to write this note :-) /Troels Therkelsen clueless@one2one-networks.com http://www.php.net/manual/en/functions.php

« previous php.notes (#15331) next »