<?php
class MCurl
{
    protected $_urls;
    protected $_result;
    protected $_timeout;

    public function __construct($timeout = 5, $urls = false)
    {
        $this->_timeout = $timeout;
        $this->_urls = $urls ? $urls : array();
        $this->_result = array();
    }

    public function setTimeout($timeout)
    {
        $this->_timeout = $timeout;
    }

    public function setUrls($urls)
    {
        $this->_urls = $urls;
    }

    public function getResults()
    {
        if(!$this->_result) $this->scan();
        return $this->_result;
    }

    public function scan()
    {
        $curl = array();
        $mh = curl_multi_init();
        foreach ($this->_urls as $id => $url)
        {
            $url = trim($url);
            $curl[$url] = curl_init();
            curl_setopt($curl[$url], CURLOPT_URL, $url);
            curl_setopt($curl[$url], CURLOPT_USERAGENT, $us_agent);
            curl_setopt($curl[$url], CURLOPT_HEADER, 0);
            curl_setopt($curl[$url], CURLOPT_RETURNTRANSFER, 1);
            curl_setopt($curl[$url], CURLOPT_TIMEOUT, $this->timeout);
            curl_multi_add_handle($mh, $curl[$url]);
        }

        $running = null;
        do curl_multi_exec($mh, $running);
        while($running > 0);

        foreach($curl as $url => $c)
        {
            $this->_result[$url] = curl_multi_getcontent($c);
            curl_multi_remove_handle($mh, $c);
        }

        curl_multi_close($mh);
    }
}