If $submit is 0/NULL/FALSE and you do "if ($submit)" you'll receive FALSE. With "if (isset($submit))" you'll receive TRUE.
In other words, isset() checks if variable is set at all and is() checks if the expression is true. Niklas -----Original Message----- From: jtjohnston [mailto:[EMAIL PROTECTED]] Sent: 28. helmikuuta 2002 7:34 To: [EMAIL PROTECTED] Subject: [PHP] isset? So what is the good of isset? What does if(isset($submit)) do differently than if($submit) ?? J -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php -- PHP General Mailing List (http://www.php.net/) To unsubscribe, visit: http://www.php.net/unsub.php
