无法使用 $_SERVER 变量卷曲到 PHP 页面

Question

对此有点困惑。试图找到一种方法来检测代理及其类型。不确定是否有限制，或者是否需要启用某些选项或什么。

这是上传到我的一个实时网站的 php 脚本

<html lang="en">
<head>
  <meta charset="utf-8">

  <title></title>
  <meta name="description">
  <meta name="author">

  <link rel="stylesheet" href="css/styles.css?v=1.0">

</head>
<body>
<?php
ini_set('display_errors', 1);
ini_set('display_startup_errors', 1);
error_reporting(E_ALL);
set_time_limit(6000);

function get_ip()
    {
    if ($_SERVER)
        {
        if ($_SERVER['HTTP_X_FORWARDED_FOR']) $ip = $_SERVER['HTTP_X_FORWARDED_FOR'];
        elseif ($_SERVER['HTTP_CLIENT_IP']) $ip = $_SERVER['HTTP_CLIENT_IP'];
          else $ip = $_SERVER['REMOTE_ADDR'];
        }
      else
        {
        if (getenv('HTTP_X_FORWARDED_FOR')) $ip = getenv('HTTP_X_FORWARDED_FOR');
        elseif (getenv('HTTP_CLIENT_IP')) $ip = getenv('HTTP_CLIENT_IP');
          else $ip = getenv('REMOTE_ADDR');
        }

    return $ip;
    }

function detect_proxy($myIP)
    {
    $scan_headers = array(
        'HTTP_VIA',
        'HTTP_X_FORWARDED_FOR',
        'HTTP_FORWARDED_FOR',
        'HTTP_X_FORWARDED',
        'HTTP_FORWARDED',
        'HTTP_CLIENT_IP',
        'HTTP_FORWARDED_FOR_IP',
        'VIA',
        'X_FORWARDED_FOR',
        'FORWARDED_FOR',
        'X_FORWARDED',
        'FORWARDED',
        'CLIENT_IP',
        'FORWARDED_FOR_IP',
        'HTTP_PROXY_CONNECTION'
    );
    $flagProxy = false;
    $libProxy = 'No';
    foreach($scan_headers as $i) {
    if ($_SERVER[$i]) { $flagProxy = true; }
    if (in_array($_SERVER['REMOTE_PORT'], array(
        8080,
        80,
        6588,
        8000,
        3128,
        553,
        554) || @fsockopen($_SERVER['REMOTE_ADDR'], 80, $errno, $errstr, 30))) 
        { $flagProxy = true; }

if ($flagProxy == true && isset($_SERVER['REMOTE_ADDR']) && !empty($_SERVER['REMOTE_ADDR'])) {

// HTTP_X_FORWARDED_FOR = yourIP
if (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR'] == $myIP) { $libProxy = 'Transparent'; }

elseif (isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR'] == $_SERVER['REMOTE_ADDR']) { $libProxy = 'Simple';

elseif ( isset($_SERVER['HTTP_X_FORWARDED_FOR']) && !empty($_SERVER['HTTP_X_FORWARDED_FOR']) && $_SERVER['HTTP_X_FORWARDED_FOR'] != $_SERVER['REMOTE_ADDR'] ) { $libProxy = 'Distorting';

elseif ( $_SERVER['HTTP_X_FORWARDED_FOR'] == '' && $_SERVER['HTTP_CLIENT_IP'] == '' && !empty($_SERVER['HTTP_VIA']) ) { $libProxy = 'Anonymous';
  else { $libProxy = 'High'; }
  }
return $libProxy;
}

$ip = get_ip();
echo 'Proxy Server Detection<br />';
echo '=================<br /><br />';
$typeProxy = detect_proxy($ip);
echo 'Use Proxy Server : ' . $typeProxy . '<br />';
echo '<br />';
echo 'Brief IP Information' . '<br />';
echo '--------------------' . '<br />';
echo 'Your IP : ' . $ip . '<br />';
echo 'Language : ' . $_SERVER['HTTP_ACCEPT_LANGUAGE'] . '<br />';
echo '<br />';
echo 'Detail IP Information' . '<br />';
echo '---------------------' . '<br />';
echo 'HTTP_ACCEPT : ' . $_SERVER['HTTP_ACCEPT'] . '<br />';
echo 'HTTP_ACCEPT_ENCODING : ' . $_SERVER['HTTP_ACCEPT_ENCODING'] . '<br />';
echo 'HTTP_ACCEPT_LANGUAGE : ' . $_SERVER['HTTP_ACCEPT_LANGUAGE'] . '<br />';
echo 'HTTP_ACCEPT_CHARSET : ' . $_SERVER['HTTP_ACCEPT_CHARSET'] . '<br />';
echo 'HTTP_CONNECTION : ' . $_SERVER['HTTP_CONNECTION'] . '<br />';
echo 'HTTP_HOST : ' . $_SERVER['HTTP_HOST'] . '<br />';
echo 'HTTP_KEEP_ALIVE : ' . $_SERVER['HTTP_KEEP_ALIVE'] . '<br />';
echo 'HTTP_USER_AGENT : ' . $_SERVER['HTTP_USER_AGENT'] . '<br />';
echo 'REMOTE_HOST : ' . @gethostbyaddr($_SERVER['REMOTE_ADDR']) . '<br />';
echo 'REMOTE_PORT : ' . $_SERVER['REMOTE_PORT'] . '<br />';
echo '<br />';
echo 'REMOTE_ADDR : ' . $_SERVER['REMOTE_ADDR'] . '<br />';
echo 'HTTP_VIA : ' . $_SERVER['HTTP_VIA'] . '<br />';
echo 'HTTP_X_FORWARDED_FOR : ' . $_SERVER['HTTP_X_FORWARDED_FOR'] . '<br />';
echo 'HTTP_PROXY_CONNECTION : ' . $_SERVER['HTTP_PROXY_CONNECTION'] . '<br />';
echo 'HTTP_CLIENT_IP : ' . $_SERVER['HTTP_CLIENT_IP'] . '<br />';
?>
</body>
</html>

连同我在我的本地主机和另一个单独的网络服务器上尝试过的脚本

$url = 'https://www.othersite.com/test.php';
    $curl = curl_init();
    curl_setopt($curl, CURLOPT_URL, $url);
    curl_setopt($curl, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, false);
    curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, false);
    curl_setopt($curl, CURLOPT_USERAGENT, $useragent);
    curl_setopt($curl, CURLOPT_HTTPHEADER, array(
        'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',
        'Accept-Language: en-US,en;q=0.9',
        'Cache-Control: max-age=0',
        'Connection: keep-alive'
    ));
         $curl_page = curl_exec($curl);
        $err = curl_errno ( $curl );
        $errmsg = curl_error ( $curl );
        $header = curl_getinfo ( $curl );
        $httpCode = curl_getinfo ( $curl, CURLINFO_HTTP_CODE );
        echo '------------------------';
        echo '<pre>';
        print_r($curl);
        echo '</pre>';
        echo '<pre>';
        print_r($err);
        echo '</pre>';
        echo '<pre>';
        print_r($errmsg);
        echo '</pre>';
        echo '<pre>';
        print_r($header);
        echo '</pre>';
        echo '<pre>';
        print_r($httpCode);
         echo '</pre>';       
if(curl_exec($curl) === false)
{
    echo 'Curl error: ' . curl_error($curl);
}
    echo '<h1>Response</h1>';
    echo '<pre>';
    print_r(curl_getinfo($curl));
    echo '</pre>';

echo 'page:';
echo $curl_scraped_page;
var_dump($curl_scraped_page);

这是结果>

Response
Array
(
    [url] => https://www.othersite.com/test.php
    [content_type] => text/html; charset=UTF-8
    [http_code] => 500
    [header_size] => 213
    [request_size] => 323
    [filetime] => -1
    [ssl_verify_result] => 20
    [redirect_count] => 0
    [total_time] => 0.14
    [namelookup_time] => 1.0E-6
    [connect_time] => 0.046
    [pretransfer_time] => 0.093
    [size_upload] => 0
    [size_download] => 0
    [speed_download] => 0
    [speed_upload] => 0
    [download_content_length] => 0
    [upload_content_length] => -1
    [starttransfer_time] => 0.14
    [redirect_time] => 0
    [redirect_url] => 
    [primary_ip] => 148.72.12.211
    [certinfo] => Array
        (
        )

    [primary_port] => 443
    [local_ip] => 10.150.43.44
    [local_port] => 51212
)
page:
C:\wamp64\www\testext.php:111:string '' (length=0)

所以，不管出于什么原因，很多东西都没有。甚至没有 echo'd html 驻留在 php 文件中。真的很混乱，我什至不确定如何在完全没有响应或错误消息的情况下调试它，让我继续前进。任何人都知道发生了什么或我可以采取什么其他途径来测试它？

Answer 1

您发布的第一个脚本有几个语法错误。当您通过 curl 调用它时，您会收到 HTTP 500 错误，因为它抛出异常。

测试中的一些注意事项：

您没有用花括号关闭 foreach 循环。
您的一系列嵌套 if 语句缺少大括号。
当从命令行运行时，$_SERVER 超全局不会填充所有值（仅供参考，我的测试——不一定是问题）导致几个 undefined index错误。

单独处理该脚本，一旦它运行正确，您就可以从另一个脚本调用它。

无法使用 $_SERVER 变量卷曲到 PHP 页面

Can't Curl to PHP Page with $_SERVER Variables

php

curl

proxies