how can I get a list of arguments from a URL?

Phrozt

I would just like to get everything after the ? in a url.

i.e.

http://www.mypage.com/index.php?id=37&page=4
I'd want JUST id=37&page=4

er.. here's a more descriptive part of my problem. I'm trying to create multiple pages for stuff, and I'm running into a problem if something is already selected and I'm going to another page.

I.E.
http://www.mypage.com/index.php?color_id=3
then page 2:
http://www.mypage.com/index.php?color_id=3&page=2
but then my problem is that it goes to:
http://www.mypage.com/index.php?color_id=3&page=2&page=3
instead of:
http://www.mypage.com/index.php?color_id=3&page=3

the other thing is, color_id isn't constant.. it could either be just index.php, index.php?color_id=?? or index.php?size=??

I was hoping that if I could just get the variables returned to me in an array, I could take just the first variable and use it.

I.E., from:
http://www.mypage.com/index.php?color_id=3&page=2
I'd want an array that contained color_id=3 and page=2, and then I would build a new URL using just element[0] which would theoretically be color_id=3

Roger_Ramjet


$ary = array();
foreach ($_GET as key=>$val) {
     $ary[$key] = $val;
}

is one way

You see, you do get the vars in the url as an array, the $_GET array.
So, if you know which ones you want to use you just do this


if (isset($_GET['color'])) {
    $whatever = $_GET['color'];
}

Phrozt

Ahh... the top one is what I need. I use the second form all the time, but like i tried to explain, the user might choose either color or size, and either variable might have multiple pages, so I cannot simply build the link based off a hardcoded variable :/.

Thank you very much

LoganK

Please mark this as resolved!

BTW, this is what I do for links like that:

$link = "page.php?";
foreach ($_GET as $key => $value)
     $link .= "$key=$value&";

echo "<a href='$link'>Click!</a>";

Sure, it adds an extra "&" at the end, but that's not the worst thing in the world, is it? And with some error checking (which I'll leave you to figure out), you can remove that extra "&".