[FX.php List] php 5 problems: I have tried to copy my existing scripts to php5 enabled servers

[Carl Anderson]

Regarding isset() ...  Try empty($var) instead.  It returns false when you'd
expect it to (for the most part), even when the variable exists.

What I'll often do is something like this, just to be safe:

$var = trim($var);
if ( empty($var) ) {
    // do something if $var is empty
    ...
}

-- 
Carl Anderson 
Technical Support Analyst
Distance Learning 
Herberger College of Fine Arts
Arizona State University
http://herbergeronline.asu.edu


> From: Bob Patin <bob at patin.com>
> Reply-To: "FX.php Discussion List" <fx.php_list at mail.iviking.org>
> Date: Mon, 5 Mar 2007 09:48:44 -0600
> To: "FX.php Discussion List" <fx.php_list at mail.iviking.org>
> Subject: Re: [FX.php List] php 5 problems: I have tried to copy my existing
> scripts to php5 enabled servers
> 
> I've always tested to make sure that not only is there a session
> variable by that name, but also that it's not empty, by using
> 
> if(strlen($_SESSION['myvar'])>0)
> 
> Probably an easier way, but it works fine for me so that's how I've
> been doing it...
> 
> I used to use isset, but sometimes I found that a variable was there,
> but there was nothing in it...
> 
> Bob Patin
> Longterm Solutions
> bob at longtermsolutions.com
> 615-333-6858
> http://www.longtermsolutions.com
> 
>    CONTACT US VIA INSTANT MESSAGING:
>       AIM or iChat: longterm1954
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> 
> 
> On Mar 5, 2007, at 9:00 AM, Dale Bengston wrote:
> 
>> With PHP 4, I used to do a lot of evaluations like
>> 
>> if ($_SESSION['whatever'])
>> 
>> ...using the presence or absence of a variable to decide action.
>> PHP 5 requires more explicit references, like
>> 
>> if (isset($_SESSION['whatever']))
>> if (!empty($_SESSION['whatever']))
>> 
>> ...so I can't be sloppy any more. Maybe you're running into this?
>> 
>> Dale
>> 
>> 
>> On Mar 5, 2007, at 6:30 AM, Gjermund Gusland Thorsen wrote:
>> 
>>> php 5 problems: I have tried to copy my existing scripts to php5
>>> enabled servers
>>> 
>>> It has problems, especially with ifs while traversing arrays in
>>> _REQUEST and _SESSION
>>> 
>>> anyone else encountered this?
>>> 
>>> ggt667
>>> _______________________________________________
>>> FX.php_List mailing list
>>> FX.php_List at mail.iviking.org
>>> http://www.iviking.org/mailman/listinfo/fx.php_list
>> 
>> _______________________________________________
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