RE: [PHP] Re: Loosing redirect in if...else

[Alex Hogan]

 (a) if you're using any values sent via the URL string (e.g.
 cf=0), you need to
 use $_GET, not $_POST;

Some of the information is coming from a form and the info from the url is
to call the different questions.  They are all on one page in a switch
statement.

 (b) empty() will also evaluate to true if the value of the variable 
 is zero.

That's right I forgot about that.  Thanks.



alex


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[PHP] Re: Loosing redirect in if...else

[memoimyself]

Hello Alex,

On 11 Mar 2004 at 10:15, Alex Hogan wrote:

 if(empty($_SESSION['sellocation'])){
 
 $_SESSION['selloction'] = '0';

Have a close look at the array member above. It's spelled differently from the others 
(an 
A is missing).

 
 }
 
 $_SESSION['sellocation'] = $_POST['sellocation'];
 
 
 if($_SESSION['sellocation'] == '0'){
 
 $errormsg = true;
 
 ?
 
 script
 
 redirect('cf_survey.php?cf=0');
 
 /script
 
 ?
 
 }
 
  
 
 [snip]
 
  
 
 a href=cf_survey.php?cf=1q1=1
 
  
 
 This seems to be where I run into trouble.
 
  
 
 When the user selects the main question choice and the page reloads I get an
 error that the index 'sellocation' is not set.
 
  
 
 If I change the expression to something like this;
 
  
 
 if(empty($_SESSION['sellocation'])){
 
 $_SESSION['selloction'] = '0';
 
 }
 
 else{
 
 $_SESSION['sellocation'] = $_POST['sellocation'];
 
 
 if($_SESSION['sellocation'] == '0'){
 
 $errormsg = true;
 
 ?
 
 script
 
 redirect('cf_survey.php?cf=0');
 
 /script
 
 ?
 
 }
 
  
 
 I loose the redirect on the drop down.
 
  
 
 What am I missing?

I'm having trouble understanding how your application works. For starters, I don't see 
where $POST['sellocation'] is being set, because you didn't provide us with that part 
of 
the code. It's true that, as it didn't make immediate sense to me, I didn't bother 
reading 
the code again because I don't have much time.

A couple of things off the top of my head that may or may not be related to your 
problem: (a) if you're using any values sent via the URL string (e.g. cf=0), you need 
to 
use $_GET, not $_POST; (b) empty() will also evaluate to true if the value of the 
variable 
is zero.

Good luck,

Erik