<?php

     function url_kontrol($url_){
         
         $url=parse_url($url_);

         switch ($url[scheme]) {
           
           case http:
           
           $url[port] ? $port=$url[port] : $port=80;
            
           break;
           
           case mms:
           
           $url[port] ? $port=$url[port] : $port=1755;    
           
           break;  
             
         }
         $yayin_kontrol = fsockopen($url[host], $port, $errno, $errstr, 30);
         
        if ($yayin_kontrol) {
            
            return $url_;
        }
        else {
            
            return "BURAYA DEFAULT URL";
        }
     }
?>