Re: Testing if variable was set
| From: | Mohamed LRHAZI | Date: | Thu, 17 May 2001 09:14:48 +0000 |
| Subject: | Re: Testing if variable was set | ||
| References: | 1 | Groups: | php.general |
| Request: | Send a blank email to php-general+get-53192@lists.php.net to get a copy of this message | ||
Jordan,
http://www.php.net/manual/en/function.isset.php
When you do: if ($var)
you are saying if $var is boolean true
which is not what you say you want:
> Hi,
> If I want to test if a variable exists (or has been passed) then I just do:
>
Mohamed~
Jordan Elver wrote:
>
> Hi,
> If I want to test if a variable exists (or has been passed) then I just do:
>
> if($var) {
> // variable is here
> }
>
> But I've noticed that a lot of people do:
>
> if(isset($var)) {
> // variable is here
> }
>
> What's the difference and which is the best way?
>
> TIA,
>
> Jord
>
> --
> Jordan Elver
> while (!asleep()) sheep++;
>
> --
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