<?php

set_time_limit(0);

class EpiCurl

{

  const timeout = 3;

  static $inst = null;

  static $singleton = 0;

  private $mc;

  private $msgs;

  private $running;

  private $requests = array();

  private $responses = array();

  private $properties = array();



  function __construct()

  {

    if(self::$singleton == 0)

    {

      throw new Exception('You must instantiate it using: $obj = EpiCurl::getInstance();');

    }



    $this->mc = curl_multi_init();

    $this->properties = array(

      'code'  => CURLINFO_HTTP_CODE,

      'time'  => CURLINFO_TOTAL_TIME,

      'length'=> CURLINFO_CONTENT_LENGTH_DOWNLOAD,

      'type'  => CURLINFO_CONTENT_TYPE

      );

  }



  public function addCurl($ch)

  {

    $key = (string)$ch;

    $this->requests[$key] = $ch;



    $res = curl_multi_add_handle($this->mc, $ch);

    if($res == 0)

    {

      curl_multi_exec($this->mc, $ch);

      return new EpiCurlManager($key);

    }

    else

    {

      return $res;

    }

  }



  public function getResult($key = null)

  {

    if($key != null)

    {

      if(isset($this->responses[$key]))

      {

        return $this->responses[$key];

      }



      $running = null;

      do

      {

        $resp = curl_multi_exec($this->mc, $runningCurrent);

        if($running !== null && $runningCurrent != $running)

        {

          $this->storeResponses($key);

          if(isset($this->responses[$key]))

          {

            return $this->responses[$key];

          }

        }

        $running = $runningCurrent;

      }while($runningCurrent > 0);

    }



    return false;

  }



  private function storeResponses()

  {

    while($done = curl_multi_info_read($this->mc))

    {

      $key = (string)$done['handle'];

      $this->responses[$key]['data'] = curl_multi_getcontent($done['handle']);

      foreach($this->properties as $name => $const)

      {

        $this->responses[$key][$name] = curl_getinfo($done['handle'], $const);

        curl_multi_remove_handle($this->mc, $done['handle']);

      }

    }

  }



  static function getInstance()

  {

    if(self::$inst == null)

    {

      self::$singleton = 1;

      self::$inst = new EpiCurl();

    }



    return self::$inst;

  }

}



class EpiCurlManager

{

  private $key;

  private $epiCurl;



  function __construct($key)

  {

    $this->key = $key;

    $this->epiCurl = EpiCurl::getInstance();

  }



  function __get($name)

  {

    $responses = $this->epiCurl->getResult($this->key);

    return $responses[$name];

  }

}

?>