request isdefined

[iamsw00sh]

The question is about :

$username = $_REQUEST['username'];

the thing is, that in this page.php, sometimes there is a "username" parameter
and sometimes there is no parameter

is there something what I can use to see if the $_REQUEST['username'] is "defined in this page?"

ASP handles this very flexible ... if there was no 'username' parameter sent, then $_REQUEST['username'] = ""
ColdFusion has something like "if isdefined $_REQUEST['username'] then"

what can I do here ?

thank you

--
If I would be such a good coder as I like coding ... I would be the Best

 

[Vragabond]

Maybe isset() could assist here.

 

[JRSofty]

You can try to use the isset() function like so

if(isset($_REQUEST['username'])){
     then do my thing
}

or you can have it do something when it is not set

if(!isset($_REQUEST['username'])){
     then do my thing
}

JRSofty

http://jrsofty.stinkbugonline.com

 

[iamsw00sh]

can I use the same thing for Session variables too ?

--
If I would be such a good coder as I like coding ... I would be the Best

 

[jpadie]

yes

 

[Olavxxx]

I know you can also do:

if(!($foo)) {
  echo "wtf?";
 }
else {
  echo $foo;
}

Dont know the performance-issues, etc. by using this though!

Olav Alexander Mjelde

http://www.volvo-power.net

Admin & Webmaster