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Re: Parameter passing question [message #173541 is a reply to message #173540]

Mon, 18 April 2011 18:14

Unrest
Messages: 10
Registered: April 2011

Karma:

Junior Member

Am Mon, 18 Apr 2011 17:42:31 +0000 schrieb Denis McMahon:
> <?php
> if (isset($_GET['x'])) {
> if ($_GET['x'] == null) {
> // it's null
> } else {
> // it has data
> }
> } else {
> // it's not defined
> }
> ?>
>

isset() checks if a variable exists and _is not null_.
-> http://de.php.net/manual/en/function.isset.php

so your "if ($_GET['x'] == null)" will never evaluate to true.

Yours,
Michael

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[Message index]

		Parameter passing question By: Chuck Lavin on Mon, 18 April 2011 17:03
		Re: Parameter passing question By: Denis McMahon on Mon, 18 April 2011 17:42
		Re: Parameter passing question By: Unrest on Mon, 18 April 2011 18:14
		Re: Parameter passing question By: Chuck Lavin on Mon, 18 April 2011 18:23
		Re: Parameter passing question By: Chuck Lavin on Mon, 18 April 2011 18:34
		Re: Parameter passing question By: Denis McMahon on Mon, 18 April 2011 19:04
		Re: Parameter passing question By: Chuck Lavin on Wed, 20 April 2011 06:49
		Re: Parameter passing question By: Unrest on Wed, 20 April 2011 09:28
		Re: Parameter passing question By: Thomas 'PointedEars' on Mon, 18 April 2011 18:28
		Re: Parameter passing question By: Unrest on Mon, 18 April 2011 18:45
		Re: Parameter passing question By: Curtis Dyer on Tue, 19 April 2011 03:28
		Re: Parameter passing question By: Chuck Lavin on Mon, 18 April 2011 18:20
		Re: Parameter passing question By: Denis McMahon on Mon, 18 April 2011 18:54
		Re: Parameter passing question By: Unrest on Mon, 18 April 2011 19:07
		Re: Parameter passing question By: Denis McMahon on Mon, 18 April 2011 19:19
		Re: Parameter passing question By: Unrest on Mon, 18 April 2011 19:40
		Re: Parameter passing question By: sheldonlg on Mon, 18 April 2011 19:11
		Re: Parameter passing question By: Denis McMahon on Mon, 18 April 2011 19:21
		Re: Parameter passing question By: Curtis Dyer on Tue, 19 April 2011 03:34

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