RE: [PHP] isset?
| From: | Niklas Lampén | Date: | Thu, 28 Feb 2002 06:16:33 +0000 |
| Subject: | RE: [PHP] isset? | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-86536@lists.php.net to get a copy of this message | ||
If $submit is 0/NULL/FALSE and you do "if ($submit)" you'll receive
FALSE.
With "if (isset($submit))" you'll receive TRUE.
In other words, isset() checks if variable is set at all and is() checks
if the expression is true.
Niklas
-----Original Message-----
From: jtjohnston [mailto:taylorjo@collegesherbrooke.qc.ca]
Sent: 28. helmikuuta 2002 7:34
To: php-general@lists.php.net
Subject: [PHP] isset?
So what is the good of isset? What does if(isset($submit)) do
differently than if($submit) ??
J
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