<?php



$subject = "link/3445/65";

$pattern = '#link/?([0-9]*)/?([0-9]*)/?$#';

preg_match($pattern, $subject, $matches);

print_r($matches);



?>

$s = "link/3445/644445";

$reg = '/link\/([\d]*)\/([\d]*)$/i';

preg_match($reg, $s, $a);

print_r($a);