This is high performance curl wrapper written in pure PHP. It's compatible with PHP 5.4+ and HHVM. Notice that libcurl version must be over 7.36.0, otherwise timeout can not suppert decimal.

   这是一个高性能的PHP封装的HTTP Restful多线程并发请求库，参考借鉴了httpresful 、multirequest等优秀的代码。它与PHP 5.4和hhvm兼容。 注意，libcurl版本必须>=7.36.0，否则超时不支持小数。

<?php
// Include Composer's autoload file if not already included.
require __DIR__.'/vendor/autoload.php';
use MultiHttp\Request;
use MultiHttp\Response;

//单个请求
$responses=array();
$responses[] = Request::create()->addQuery('wd=good')->get('http://baidu.com?', array(
          'timeout' => 3,
          'timeout_ms' => 2000,
          'callback' => function (Response $response) {

          }))->send();

$responses[] = Request::create()->get('http://qq.com', array(
          'callback' => function (Response $response) {
              //sth
          }))->addOptions(array(
          'method' => Request::PATCH,
          'timeout' => 3,
      ))->send();
      //test post
$responses[] = Request::create()->post(
      'http://127.0.0.1',array('data'=>'this_is_post_data'), array(
          'callback' => function (Response $response) {
              //sth
          }))->send();

foreach ($responses as $response) {
  echo $response->request->uri, ' takes:', $response->duration,  "\n\t\n\t";
}
?>
//Multi-request 多个请求:

<?php
use MultiHttp\MultiRequest;

$mr  = MultiRequest::create();
$rtn = $mr->addOptions(
    array(
        array(
            'url'    => 'http://google.com',
            'timeout' => 2,
            'method' => 'HEAD',
            'data'   => array(
            ),
            'callback' => function (Response $response) {
                //sth
            }
        ),
    ))
    ->add('GET', 'http://sina.cn',array(), array(
        'timeout' => 3
    ))
    ->import(Request::create()->trace('http://sohu.cn', array(
            'timeout'  => 3,
            'callback' => function (Response $response) {
                //sth
            }))->applyOptions())
    ->send();
    foreach ($rtn as $response) {
        echo $response->request->uri, ' takes:', $response->duration, ' ', "\n\t\n\t";
    }

?>