Extract 9 Consecutive Numbers from URL

[LuisAngel]

How do I extract 9 consecutive numbers from URLs like the following:

http://itunes.apple.com/us/app/redlaser/id312720263?mt=8

The desired extraction is 312720263.

Will the following work?

<?
preg_match('/([0-9]{9})/', $alphanum, $matches);
$sequence = $matches[1];
?>

Thanks.

[Frinavale]

Have you considered changing your query string to include an "id" parameter?

So you'd have something like:
"http://itunes.apple.co m/us/app/redlaser/id312720263?mt= 8&id=31272026 3"

You don't have control over the query string do you.
Well in this case I'd take the last 9 digits in the URL.
The "$" is used to to indicate the end of the string...

So, the following will work so long as you $alphanum variable contains the URL.

preg_match('/([0-9]{9}$)/', $alphanum, $matches)

[LuisAngel]

You are right in that I don't have control over the query string.