Extracting GET variables from a string

[NotionCommotion]

I have a string that looks like /index.php?g1=111&g2=222&g3=333.  How can I obtain the value of g1 (i.e. 111)?  It does not represent the current state of the server thus I cannot just use $_GET.  It also is not necessarily the first item.

The script below appears to work, however, http://php.net/manual/en/function.parse-url.php states
 

This function is intended specifically for the purpose of parsing URLs and not URIs. However, to comply with PHP's backwards compatibility requirements it makes an exception for the file:// scheme where triple slashes (file:///...) are allowed. For any other scheme this is invalid.

 

It appears that my string is a URI and not a URL, but I might be wrong.

How should this be accomplished

<?php
$str='/index.php?g1=111&g2=222&g3=333';

$array=parse_url($str);
parse_str($array['query'],$get);
echo("<p>{$get['g1']}</p>");
?>

[Ch0cu3r]

First use substr to get the query string (whatever is after the ?). Then pass the query string to parse_str

$str='/index.php?g1=111&g2=222&g3=333';

$query_string = substr($str, strpos($str, '?')+1);
parse_str($query_string, $array);

printf('<pre>%s</pre>', print_r($array, 1));

Edited January 13, 2015 by Ch0cu3r

[NotionCommotion]

 

First use substr to get the query string (whatever is after the ?). Then pass the query string to parse_str

 

Thanks.  I like your approach more.

[Barand]

or

<?php
     $str = "/index.php?g1=111&g2=222&g3=333";
     $bits = parse_url($str);
     parse_str($bits['query'], $vals);
     echo '<pre>',print_r($vals, true),'</pre>';
?>

gives

Array
(
    [g1] => 111
    [g2] => 222
    [g3] => 333
)

[NotionCommotion]

Hi Barand,  Your code is what I posted in my original post.

[Barand]

Doh! So it is.

 

As it works, what was your problem then?

[NotionCommotion]

deja vu!  A couple of posts were deleted by someone, and where almost identical.