Get the GET variables from a URL String

问题:

Hey, say I have a url just being passed through my php is there any easy way to get some GET variables that are being passed through it? It's not the actual url of the page or anything.

like a just have a string containing

http://www.somesite.com/index.php?url=var&file_id=var&test=var

Whats the best way to get the values for those variables?

回答1:

parse_str(parse_url($url, PHP_URL_QUERY), $array), see the manpage for parse_str for more info.

回答2:

$href = 'http://www.somesite.com/index.php?url=var&file_id=var&test=var';

$url = parse_url($href);
print_r($url);
/* Array
(
    [scheme] => http
    [host] => www.somesite.com
    [path] => /index.php
    [query] => url=var&file_id=var&test=var
) */

$query = array();
parse_str($url['query'], $query);

print_r($query);
/* Array
(
    [url] => var
    [file_id] => var
    [test] => var
) */

回答3:

It's actually a lot easier than writing any custom functions.

$queryStr = $_SERVER['QUERY_STRING'];

回答4:

I'd use something like:

preg_match_all('/(\?|&)([^=]+=[^&]*)/', $string , $matches);

then

print_r($matches[2]);
/*
Array
(
    [0] => url=var
    [1] => file_id=var
    [2] => test=var
)
*/

Hope it works 4 u.

回答5:

A quick google for "PHP GET" gives this page from w3schools:

http://www.w3schools.com/php/php_get.asp