如何查找使用PHP的域是HTTP还是HTTPS(带有或不带有WWW)? [英] How to find the domain is whether HTTP or HTTPS (with or without WWW) using PHP?

问题描述

我有百万(1,000,000)个域列表.

I have million (1,000,000) domains list.

+----+--------------+--------------------------+
| Id | Domain_Name  |       Correct_URL        |
+----+--------------+--------------------------+
|  1 | example1.com | http://www.example1.com  |
|  2 | example2.com | https://exmple2.com      |
|  3 | example3.com | https://www.example3.com |
|  3 | example4.com | http://example4.com      |
+----+--------------+--------------------------+

• ID和Domain_Name列已填充.
• Correct_URL 列为空.
• ID and Domain_Name column is filled.
• Correct_URL column is empty.

问题:我需要填写Correct_URL列.

我面临的问题是如何在域之前找到前缀部分.它可能是http://或http://www.或https://或https://www.

The problem I face is how do I find the prefix part before the domain. It may either http:// or http://www. or https:// or https://www.

如何使用PHP正确找到上述4种内容?请注意，我需要在所有1,000,000个域中运行代码....因此，我正在寻找一种检查它的最快方法...

How do I find correctly what is from above 4 using PHP? Please note that I need to run code to all 1,000,000 domains.... So I am looking at a fastest way to check it...

推荐答案

您可以使用cURL方法:

$url_list = ['facebook.com','google.com'];

foreach($url_list as $url){

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
    curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
    curl_setopt($ch,CURLOPT_USERAGENT,'Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.13) Gecko/20080311 Firefox/2.0.0.13');
    curl_exec($ch);

    $real_url =  curl_getinfo($ch, CURLINFO_EFFECTIVE_URL);
    echo $real_url;//add here your db commands

}

此操作需要花费一些时间，因为它需要使用上次重定向的URL.如果您只想查看其http或https，则可以尝试以下操作:

This one take some times because it take the last redirected url. if you only want to check whether its http or https you could try this:

$url_list = ['facebook.com','google.com'];

foreach($url_list as $url){

    $ch = curl_init();
    curl_setopt($ch, CURLOPT_URL, $url);
    curl_exec($ch);

    $real_url =  curl_getinfo($ch, CURLINFO_REDIRECT_URL);
    echo $real_url;//add here your db commands

}

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