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

[Dale Bengston]

However...

$var = trim($var);

...will error under PHP 5 if $var is not set.

Dale


On Mar 5, 2007, at 9:57 AM, Carl Anderson wrote:

> 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
>>       Yahoo: longterm_solutions
>>       MSN: tech at longtermsolutions.com
>>       ICQ: 159333060
>>
>>
>> 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
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