PHP parse_str() help needed

[nirvana43]

Hello
I'm coding a mod for vb

I'm having problem with parse_str() function in following code block :

foreach ($matched as $urls => $names)
{
parse_str($urls);
$temp=$ac;

//*****And then i'm printing values of $temp*********//

}

$urls contains following string data :

/sent?r345dfd32s&link=general&ac=3245534893783&status=waiting

I wanna store only numbers under "ac" in some string variable.

However, above code snippet results no data (blank) in $temp.
Is it because parse_str() is used within foreach() loop?
(I have to use it in foreach() because $urls contains different links everytime. Or is there any other way?)

If i remove foreach() loop then code works perfect.
Can any1 please help me with this??
You will get full credit in mod for solving this issue.