.php?category=3

Anon

I was wondering how to change a php page using a ? after the url, then a number. How do you do this?

zkong

the php file will get a parameter named category and the value of it is 3.
Then the program will generate the html codes on the condition of category equaling 3.When categary equals diffrent values,the php file will generate diffrent html codes.

Anon

some sample code....

<?php
if ($category == 3) {
echo("This is the category = 3 page!");
} else {
echo("this is another page");
}
?>

just an fyi, PHP will automatically convert any URL parameters to a variable.. just remember the $ in front of the name..

John

puppet

why dont do...
<?
switch($category) {
case 3:
echo "page 3";
break;
default: // or someting don´t realy remember
echo "default page":
break;
}
?>

Anon

This may help.

http://www.phpbuilder.com/forum/read.php3?num=2&id=142087&thread=142082

http://sabyo.ath.cx

feigenblatt

Just for safety reasons,
I only relly on global variables I set the value myself.

Otherwise I always use
$HTTPVARS['varname']
where can be one of
GET
POST
SESSION
SERVER
and so on (as long as track_vars is enabled).

In your case you want to use GET.
The GET case is the less critical for security, but make this a rule of thumb because one day you might be reading a global var that you expected to come from your form or even a session, when it was indeed set by a GET variable.
You can control the precedence of variables in your php.ini