<?php
#######################################################################
#                     UD Server Status 1.0                            #
#            Copyright (C) 2005 by Andrew I. Poluosmak                #
#               Email: hide@address.com                     #
#                      Ukraine, Kiev 2005                             #
#######################################################################

///////////////////////////////////////////////////////////////////////
// Example:
///////////////////////////////////////////////////////////////////////
//      $patch = "patch to images";                                  //
//      $site = "http://www.your.site";                              //
//      $server_status = new ServerStatus($site, $patch);            //
//      echo $server_status;                                         //
///////////////////////////////////////////////////////////////////////

class ServerStatus
{
    var $_STATUS;           // Server status
    var $_SRV;              // Server link
    var $_PATCH_IMG;        // Patch to images

    //--- Class Constructor ---//

    function ServerStatus($site_link, $patch_img)
    {
        $this->_STATUS    = NULL;
        $this->_SRV       = $site_link;
        $this->_PATCH_IMG = $patch_img;

        $this->getStatus();
    }

    //--- Engine (Publick function) ---//

    function getStatus()
    {
        if ($this->_STATUS != NULL)
        {
            return $this->_imagesStatus($this->_STATUS);
        } else {
            $site      = $this->_expLink($this->_SRV);
            $check_url = @fsockopen($this->_server($site[0]), $site[1], $errno, $errstr, 20);

            if (!$check_url)
            {
                $this->_STATUS = "dead";
            } else {
                $this->_STATUS = "life";
            }

            return $this->_imagesStatus($this->_STATUS);
        }
    }

    //--- Private functions ---//

    function _expLink($link)
    {
        $exp_link         = str_replace("::", ":", $link);
        list($site,$port) = explode (':', $exp_link);

        if (empty($port)){
	        $port = 80;
        }

        $array = array($site, $port);

        return $array;
    }

    function _server($site)
    {
         if (strstr($site,"/"))
         {
             $site = substr($site, 0, strpos($site, "/"));
         }

         return $site;
    }

    function _imagesStatus($status)
    {
        $array = array("dead" => "dead.gif", "life" => "life.gif");

        return  $this->_PATCH_IMG.$array[$status];
    }
}
?>