用php模拟登陆报400错，是什么原因

headers的时候报405错，加上headers报400错，能否指点下解决思路，万分感谢！！

<?php

// 要访问的目标页面

$url = "http://s.weibo.com";

$urls = "https://s.weibo.com";

// 代理服务器

define("PROXY_SERVER", "tcp://t.16yun.cn:31111");

// 隧道身份信息

define("PROXY_USER", "16YUN123");

define("PROXY_PASS", "123456");

$proxyAuth = base64_encode(PROXY_USER . ":" . PROXY_PASS);

// 设置 Proxy tunnel

$tunnel = rand(1,10000);

$headers = implode("\r\n", [

"Proxy-Authorization: Basic {$proxyAuth}",

"Proxy-Tunnel: ${tunnel}",

]);

$sniServer = parse_url($urls, PHP_URL_HOST);

$options = [

"http" => [

"proxy" => PROXY_SERVER,

"header" => $headers,

"method" => "GET",

'request_fulluri' => true,

],

'ssl' => array(

'SNI_enabled' => true, // Disable SNI for https over http proxies

'SNI_server_name' => $sniServer

)

];

print($url);

$context = stream_context_create($options);

$result = file_get_contents($url, false, $context);

var_dump($result);

// 访问 HTTPS 页面

print($urls);

$context = stream_context_create($options);

$result = file_get_contents($urls, false, $context);

var_dump($result);