Posted by tg-php on 06/06/05 22:00

Yeah.. you're comparing a string, 'NULL' with an integer 0. You're not comparing NULL with anything, you're comparing a string that contains the word 'NULL'.

You can use === to do an exact comparison without conversion.

echo intval('NULL');

intval('NULL') === 0



= = = Original message = = =

Run this code:

<?
if( 0 == 'NULL' )
echo "'NULL' == 0<br>";
else
echo "'NULL' != 0<br>";

?>

Is this just a case of PHP converting variable types for comparison?

thnx,
Chris

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