Составить регулярное выражение для ссылки

<?php
$s = "https://steamcommunity.com/tradeoffer/new/?partner=88888888888&token=aBaBaBaBaB";
$p = "/^https?:\/\/steamcommunity\.com\/tradeoffer\/new\/\?partner\=([0-9]{1,15})&token=([\w]{1,15})$/";
if (preg_match($p, $s, $m))
    echo "<pre>".print_r($m,1)."</pre>";
else
    echo "Wrong url!";

<?php 
$s = $_GET["s"];
$p = "/^https?:\/\/steamcommunity\.com\/tradeoffer\/new\/\?partner\=([0-9]{1,15})&token=([\w]{1,15})$/";
if (preg_match($p, $s, $m))
    echo "<pre>".print_r($m,1)."</pre>";
else
    echo "Wrong url!";
?>

$s = $_POST["s"];
 
function check_offer($parsed_url) { 
  $scheme   = isset($parsed_url['scheme']) ? $parsed_url['scheme'] : ''; 
  $host     = isset($parsed_url['host']) ? $parsed_url['host'] : ''; 
  $path     = isset($parsed_url['path']) ? $parsed_url['path'] : ''; 
  $query    = isset($parsed_url['query']) ? '?' . $parsed_url['query'] : ''; 
  if (($scheme=='https') and ($host=='steamcommunity.com') and ($path=='/tradeoffer/new/')){return "yes";}else{return "no";}
}
$d = check_offer(parse_url($s));
echo $d;

$s = $_POST["s"];
$p = "/^https?:\/\/steamcommunity\.com\/tradeoffer\/new\/\?partner\=([0-9]{1,15})&token=([\w]{1,15})$/";
if (preg_match($p, $s, $m))
     echo 'partner='.$m[1].' and token='.$m[2];
else
    echo "Wrong url!";

function showPage($x = array()){
   return array_intersect_assoc($x,  $_REQUEST) == $x;
}
if(showPage(array('option'=>'com_content', 'view'=>'article'))):
echo 'Yes';
endif;

function testLink($x = array(), $link = ''){
   return array_intersect_assoc($x,  parse_url($link)) == $x;
}
 
$link = 'https://plus.google.com/u/0/+FedorVlasenko/posts';
 
if(testLink( array('scheme'=>'https', 'host'=>'steamcommunity.com', 'path'=>'/tradeoffer/new/'), $link )){
    echo 'Yes';
}else{
    echo 'Bad';
}