libs/URLCheck.class.php

<?php

define("URL_OK","http/1.1 200 ok");

class URLCheck {
   var $_fp;
   var $_url;
   var $_host;
   var $_uri;
   var $_port; 
  
   function _scan_url(){
     $req = $this->_url;
      
     $pos = strpos($req, '://');
     $req = substr($req, $pos+3);
     $pos = strpos($req, '/');
     if ($pos === false)
       $pos = strlen($req);
     $host = substr($req, 0, $pos);
     $this->_host = $host;
     $this->_port = 80;
     $this->_uri = substr($req, $pos);
     if ($this->_uri == '')
       $this->_uri = '/';
   }
  
   function URLCheck($url){
     $this->_url = $url;
     $this->_scan_url();
   }
  
   function urlExists(){
     $req = "GET ".$this->_uri." HTTP/1.0\r\n"."Host: ".$this->_host."\r\n\r\n";
     $this->_fp = fsockopen($this->_host, $this->_port);
     fwrite($this->_fp, $req);
     while(is_resource($this->_fp) && $this->_fp && !feof($this->_fp)){
       $response = fread($this->_fp, 1024);
       if (stristr($response,URL_OK)){
         fclose($this->_fp);
         return 1;
       }
     }
     fclose($this->_fp);
     return 0;
   }
}
?>