I'm trying to redirect from one page to another while retaining the parameters.
e.g. if I have a page page.php?param1=1¶m2=2, what's the easiest way to extract "param1=1¶m2=2"?
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4 Answers
Use $_SERVER['QUERY_STRING'] to access everything after the question mark.
So if you have the url:
http://www.sample.com/page.php?param1=1¶m2=2
then this:
$url = "http://www.sample.com/page2.php?".$_SERVER['QUERY_STRING'];
echo $url;
will return:
http://www.sample.com/page2.php?param1=1¶m2=2
Comments
In addition to Robs answer:
You can use http_build_query and $_GET.
This is build-in and can deal with arrays.
Also you can easily manipulate the GET params this way, befor you put them together again.
unset($_GET['unsetthis']);
$query = http_build_query($_GET);
Comments
i would do
$querystring = '?'
foreach($_GET as $k=>$v) {
$querystring .= $k.'='.$v.'&';
}
$url .= substr($querystring, 0, -1);
where $url already contains everything before the ?
you could also use $_SERVER['QUERY_STRING'] but as per the PHP manual:
$_SERVER is an array containing information such as headers, paths, and script locations. The entries in this array are created by the web server. *There is no guarantee that every web server will provide any of these; servers may omit some, or provide others not listed here. *
2 Comments
Michael Mrozek
That's technically true, but whatever web server he's using almost certainly provides
$_SERVER['QUERY_STRING']; most PHP-based systems rely on it existing
ivoba
this will also not render arrays like:
key[innerkey]=value . it will get you: key=Array