<?php

class CurlMulti
{
    private static $instance;
    protected $multi;
    protected $curl = array();
    protected $done = array();
    public $error = array();
    public $timeout = 1.0;

    /** Initialize CURL
    */
    function __construct()
    {
        $this->multi = curl_multi_init();
    }

    /** Close CURL
    */
    function __destruct()
    {
        curl_multi_close($this->multi);
    }

    public static function getInstance()
    {
        if (!isset(self::$instance))
            self::$instance = new CurlAsync();

        return self::$instance;
    }

    /** Execute request or get its response
    */
    function __call($name, array $args)
    {
        if ($args) // execute request
        {
            $url = $args[0];
            $header = array();

            if(isset($args[1]) && is_array($args[1]))
                $header = $args[1];

            $curl = curl_init($url);
            $this->curl[$name] = $curl;

            curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
            curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
            curl_setopt($curl, CURLOPT_HTTPHEADER, $header);

            $return = curl_multi_add_handle($this->multi, $curl);
            while (curl_multi_exec($this->multi, $running) == CURLM_CALL_MULTI_PERFORM){}

            return $return;
        }

        // get response
        if (!isset($this->curl[$name])) // wrong identifier
            return false;

        $curl = $this->curl[$name];

        while (!isset($this->done[(int) $curl]))
        {
            curl_multi_select($this->multi, $this->timeout);
            while (curl_multi_exec($this->multi, $running) == CURLM_CALL_MULTI_PERFORM){}
            while ($info = curl_multi_info_read($this->multi))
            {
                if ($info["msg"] == CURLMSG_DONE)
                    $this->done[(int) $info["handle"]] = true;
            }
        }

        $this->error[$name] = curl_getinfo($curl, CURLINFO_HTTP_CODE);


        $body = curl_multi_getcontent($curl);
        $json = json_decode($body);

        if (json_last_error() == JSON_ERROR_NONE)
            return $json;

        return $body;
    }
}




// Utilisation:
$http = CurlMulti::getInstance();

$http->test1("https://community-league-of-legends.p.mashape.com/api/v1.0/euw/summoner/retrieveInProgressSpectatorGameInfo/wakazira", array('X-Mashape-Authorization: 90gwEFjQKj5EBjV4kt8mCKhCSKcg7A0s'));
$http->test2("http://prod.api.pvp.net/api/lol/euw/v1.1/summoner/by-name/ghota?api_key=ae41c074-340c-4c93-8a1a-12300ffd135c");

var_dump($http->test1());
echo "<br /><br /><br /><br /><br /><br /><br /><br />";
var_dump($http->test2());
echo "<br /><br /><br /><br /><br /><br /><br /><br />";
var_dump($http->error);

?>