Change code depending on URL

[roldahayes]

Hi,

 

Is it possible to dynamically change a variable depending on the URL of the page?

 

i.e

 

 

my code on the page is:  $CODE = "somethinghere";

 

if the page url is www.domain.com/654321.php

 

it chages it to $CODE = "654321";

 

 

I hope I've explained this correctly!

 

 

[requinix]

Sure. It's called URL rewriting. What actually happens is requests for /654321.php transparently (user doesn't know) get rewritten to something like /page.php?code=654321. Then you can get your $CODE from the $_GET array.

[roldahayes]

Ok, so do I have to use .htaccess to set this up?  I'm a little confused by different examples after searching URL rewriting.

[requinix]

If you have Apache and shared hosting (ie, you don't control the system) then yes, you'd use a .htaccess with mod_rewrite rules. Looks like

RewriteEngine on

# only match if the requested file doesn't exist
RewriteCond %{REQUEST_FILENAME} !-f
# only match if the requested directory doesn't exist
RewriteCond %{REQUEST_FILENAME} !-d
# rewrite 123.php to page.php?id=123 and stop processing
RewriteRule ^(\d+)\.php$ page.php?id=$1 [L]

Though the two RewriteConds probably aren't even necessary.

[roldahayes]

Is there a way to test this is working?

 

I was thinking I could use:

 

 

echo 'Display: ' . htmlspecialchars($_GET["id"]);

 

But not sure if this is just not working or it is wrong?

[requinix]

You would test it by... putting the stuff in place, writing code, and seeing if it works.

 

Did you put that stuff in a .htaccess file in your website directory? Is your local setup and your web host configured to allow using .htaccess files at all?

Easy way to check that second question is to put

asdf

stuff in the .htaccess and seeing what happens to your site: if your site loads then .htaccess isn't being used and you need to deal with that, and if not then remove that stuff because it is being used.

[roldahayes]

Yes, the htaccess appears to be loading (I have it doing other things to different urls on the site) 

[roldahayes]

I just want to make sure that I have explained myself correctly in my original post.

 

 

My full URL's are like this:

http://mysite.com/PPP/awr99-1322.php

 

 

Within my code  I have:

$CODE = "awr99-1322"; (This then generates everything on my page to be working correctly)

 

 

I need the $CODE="---------";   to be generated every time depending on url name.

 

 

So for example,  if the url was:

http://mysite.com/PPP/awr100-1322.php

 

Then the code would end up as,  $CODE = "awr100-1322";

[requinix]

Is awr100-1322.php an actual PHP file? Or what? What is the file with this $CODE stuff?

[roldahayes]

No,  awr100-1322.php is the page URL.

 

I want the code within the page to read the url and populate itself with the page url (minus the .php)

i.e

 $CODE = "Page URL Here"; 

At the moment, I have to manually open the page and change the $CODE to what ever the page Url is - I want this to happen dynamically

Edited February 18, 2016 by roldahayes

[requinix]

What is the name of the actual file containing the code? And did the .htaccess thing work for you or not?