PHP - 如何查看服务器是否支持 TLS 1.0? [英] PHP - How to see if a server supports TLS 1.0?

问题描述

我正在编写一个简单的检查器，您可以在其中输入一个 URL，以检查输入的 URL 是否使用 TLS 1.0、1.1 或 1.2.基本上我想显示一条消息，说Yoursite.com 正在使用 TLS 1.0.建议禁用它."

I am writing a simple checker where you can enter a URL that would check if the URL entered is using TLS 1.0, 1.1 or 1.2. Essentially I want to show a message saying "Yoursite.com is using TLS 1.0. It is recommended to disable this."

问题是，如果我是发起呼叫的服务器，我只能弄清楚.然后我可以使用这个.这允许你编写一个 Curl 脚本，连接到 howsmyssl.com，它会返回我用来连接的连接.这不是我想要的.

The problem is, I am only able to figure it out if I am the server making the call. Then I can use this. That allows you to write a Curl script, connect to howsmyssl.com and it would return what connection I used to connect. This is not what I want.

我想知道如何使用 PHP 连接到 URL，并查看该服务器是否支持 TLS1.0、1.1 或 1.2.

I want to know how I can use PHP to connect to a URL, and see if that server supports TLS1.0, 1.1 or 1.2.

有没有办法做到这一点?

Is there a way to do this?

推荐答案

这个怎么样:

<?php

$url = 'https://fancyssl.hboeck.de/';

$protocols = [
    'TLS1.0' => ['protocol' => CURL_SSLVERSION_TLSv1_0, 'sec' => false],
    'TLS1.1' => ['protocol' => CURL_SSLVERSION_TLSv1_1, 'sec' => false],
    'TLS1.2' => ['protocol' => CURL_SSLVERSION_TLSv1_2, 'sec' => true],
    'TLS1.3' => ['protocol' => CURL_SSLVERSION_TLSv1_3, 'sec' => true],
];

foreach ($protocols as $name => $value) {
    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_SSLVERSION, $value['protocol']);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

    $response = curl_exec($ch) !== false;

    if ($value['sec'] && !$response) {
        echo "Secure $name not supported =( \n";
    } elseif ($value['sec'] && $response) {
        echo "Ok! Secure $name supported \n";
    } elseif (!$value['sec'] && $response) {
        echo "Insecure $name supported =( \n";
    } elseif (!$value['sec'] && !$response) {
        echo "Ok! Insecure $name not supported\n";
    }
}

输出为:

Ok! Insecure TLS1.0 not supported
Ok! Insecure TLS1.1 not supported
Ok! Secure TLS1.2 supported 
Ok! Secure TLS1.3 supported 

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