用php模拟登陆报400错，是什么原因
各位达人：我用php爬虫模拟登陆，在不加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！！
用的代码如下：
<?php
// 要访问的目标页面
$url = "http://s.weibo.com";
$urls = "https://s.weibo.com";
// ***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);
