$matches = array();
preg_match('/id=([0-9]+)\?/', $url, $matches);
This is safe for if the format changes. slandau’s answer won’t work if you ever have any other numbers in the URL.
php.net/preg-match
$matches = array();
preg_match('/id=([0-9]+)\?/', $url, $matches);
This is safe for if the format changes. slandau’s answer won’t work if you ever have any other numbers in the URL.
php.net/preg-match