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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