$iH->gets($urls_get, false);
// init OPs
$iH->reffer = 'https://passport.weibo.cn/signin/login?entry=mweibo&res=wel&wm=3349&r=http%3A%2F%2Fm.weibo.cn%2F';
$iH->origin = 'https://passport.weibo.cn';
// 或者下面的2选1
$iH->requestHeader = array('Origin' => 'https://passport.weibo.cn');
$back = $iH->post($url_post, $post_data);
// return string or false
echo $iH->getLastError();
// 打印错误信息(print last error msg)
// 5.2 multi-http_post
$back = $iH->posts($urls_post, $urls_post_data);
// 异步方式：return array (asyn method)
$back = $iH->posts($urls_post, $urls_post_data, false);
// 同步方式：return array (sync method)
// 6. 笔者在iHttp中添加了静态方法，方便大家查看执行相同任务时同步和异步的性能差别，调用方法：(test the time your code cost with calc_begin and calc_end )
$iH::calc_begin();
//@todo add your codes :)
$iH::calc_end();
// 7. 设置连接超时时间（set_connect_timeout）
$iH->set_connect_timeout(10);
// set_connect_timeout to 10secs
// 8. 获取响应头信息(get response header informations)
$iH->res_cookie;
# Cookie-string-format
$iH->res_ar_cookie;
# Cookie-array-format
$iH->res_ar_header;
# Header-array-format
$iH->res_headerstr;
# Header-string-format
