Calling All URL parameters

Anon

Hi there,

I have links that shows in the URL something like this:

script.php?action=1&page=1

Now I'm introducing another variable added on another link,

so I'll get something like:

script.php?action=1&page=1&offset=1

How can I achieve this? by using http_get_vars? Please give an example, thanks!

I tried this:
print"<a href=\"$HTTP_GET_VARS&offset=$newoffset\">Test</a>\n";

and all I get for the link is http://domain.com/&offset=1

non of the parameters were passed (script.php?action=1&page=1)

btw, I have <?php_track_vars?> on the top of the script.

Am I using http_get_vars wrong?

Thanks for you time!

Anon

Yes yo are using http_get_vars wrong. http_get_vars is an array of all variables found in the GET string. So using your first URL http_get_vars would have 2 entries one called "action" and the other called "page".

What you want to do is:

print"<a href=\"" . $HTTP_SERVER_VARS["REQUEST_URI"] . "&offset=$newoffset\">Test</a>\n";

The variable $HTTP_SERVER_VARS is an array holding a lot of information about what the server is and has done. The array element REQUEST_URI is what the server found in the URL after the server information. Basically if the URL was http://www.yahoo.com/index.html?abc=123 then the REQUEST_URI would be /index.html?abc=123

Anon

Thanks for your response,

since the code is in a function, I declared the variable global.. here's what I did:

global $http_server_vars;

print "<a href=\" ".$HTTP_SERVER_VARS["REQUEST_URI"]."&offset=$newoffset\" >test</a>\n";

It still doesnt return anything..

I got http://domain.com/&offset=1

Any ideas?

Anon

Check to make sure that your environment variables are getting set. If you are working on a hosted machine sometimes they don't give you access to all of the information available. Put this into a script and check what is available to you on the server.

<?php
print "<pre>";
var_dump($GLOBALS);
print "</pre>";
?>

You should get a very long list of variables. Look for this section:

["HTTP_SERVER_VARS"]=>
array(32) {

Under that section you should find ["REQUEST_URI"] if so then you have the variable that you need, all you need to do is figure out why it's not appearing in your function.

I'm not sure if case matters in PHP for variable nameing, but it might so you might try changing your global $http_server_vars; line to global $HTTP_SERVER_VARS;

Anon

Hi Rob,

I put this:
<?php
print "<pre>";
var_dump($GLOBALS);
print "</pre>";
?>

on top of my script and all I got was:

string(0) ""

nothing more..

I also tried to put all caps for the gloabl variable.. didn't help either..

So if my host machine does not support the request_uri, does it mean there're no other ways to pass the parameters?

Thanks for your time.

Anon

hey Rob,

I got it to work 🙂

turned out that I gotta make the $request_rui global...

so this is what I have:

print "<a href=\"$REQUEST_URI&offset=$newoffset\" class=bluelink>NEXT</a>\n";

As you can see, this is the next,prev button script..

it's working perfectly, but when I hit the 'next'button, a offset=1 is added to the URL, and each time the next button is linked, offset=1 just accumulates.. and finally the URL becomes a huge one.. something like:

http://domain.com/script.php?action=1&page=1&offset=1&offset=2&offset=3&offset=4....etc

Now the page still links to the last offset (I don't know why it doesn't get confused, but it worked..)

But it's hella ugly.. So, is there a way around this?

THanks a million!

kira-of-fires

No there's no difference between REQUEST_URI and REQUEST_URL, see php manual for details. REQUEST_URI may contan host information. Usually $REQUEST_URI contains value used in HTTP's GET or POST command. According to HTTP/1.1 there's no need of placing hostname to URI, but it should be in "Host:" header's line. So usually it contains only path and document, or just document name. But you have to mention that hostname may suddenly appear..

Back to your problem.
Usually I'm using $QUERY_STRING variable. It contains you query string. I think replacing old values by ereg_replace() will be fine, or after a couple of clicks you'll get your query strink like: ?var1=1&var2=2&var2=3&var2=4

kira-of-fires

The solution lies near ereg_replace() function....

$href=ereg_replace("offset=([1234567890]+)&", "$newoffset", $REQUEST_URI);
// replacing value of an offset variable. It there's no one, original string will be returned.
if ($href==$REQUEST_URI) {$REQUEST_URI.="&offset=$newoffset";}
// if there' no offset value add it.

print "<a href=\"$REQUEST_URI\" class=bluelink>NEXT</a>\n";

kira-of-fires

Oops, @!#$ happened, just remove "&" from regular expression.....

Anon

THANK YOU! Been waiting all night for this 🙂

Gonna try it out now.