PHP给第三方接口POST或GET方式传输数据并得到返回值

function Post($url, $post = null)
{
     $context = array();

     if (is_array($post))
     {
         ksort($post);

         $context["http"] = array
         (   

             "timeout"=>60,
             "method" => "POST",
             "content" => http_build_query($post, "", "&"),
         );
     }

     return file_get_contents($url, false, stream_context_create($context));
}

$data = array
(
     "name" => "test",
     "email" => "test@gmail.com",
     "submit" => "submit",
);

echo Post("http://www.baidu.com", $data);