有趣的问题。我已经摆弄了一段时间;这种方法不可避免地并不完美,但它可能会让你走上正确的道路。
我的解决方案从这个存储库中的两个源文件开始:https ://github.com/usrflo/registered-domain-libs/tree/master/PHP
首先,如果您的 php 版本中不推荐使用 split ,您可能需要修改 regDomain.inc.php 以更改 to 的实例$signingDomainParts = split('\.', $signingDomain);
。$signingDomainParts = preg_split('/\./', $signingDomain);
一旦你保存了这些,试试这个测试代码,我把线程中提到的所有 URL 作为测试用例:
<?php
require_once("effectiveTLDs.inc.php");
require_once("regDomain.inc.php");
$tests = Array("/images/sample.jpg","//main.com/images/sample.jpg","images/sample.jpg", "sub.main.com/images/sample.jpg", "http://www.example.com/www.google.com/sample.jpg", "amazon.co.uk/images/sample.jpg", "amazon.com/images/sample.jpg", "http://sub2.sub.main.co.uk/images/sample.jpg", "sub2.sub.main.co.uk/images/sample.jpg");
foreach($tests as $test)
{
echo "Attempting $test.<BR/>";
$one = parse_url($test);
if(!array_key_exists("host", $one))
{
echo "Converting to: http://$test";
echo "<BR/>";
$one = parse_url("http://$test");
}
if(!$one){echo "<BR/>";continue;}
echo "parse_url parts: ";
print_r($one);
echo "<BR/>";
if($one && array_key_exists("host", $one))
{
$domain = getRegisteredDomain($one["host"], $tldTree);
if(sizeof($domain))
{
$two = explode(".", $domain);
echo "domain parts: ";
print_r($two);
echo "<BR/>";
if(sizeof($two))
{
$three = array_diff(explode(".", $one["host"]), $two);
if(sizeof($three))
{
echo "Hark! A subdomain!: ";
print_r($three);
echo "<BR/>";
}
}
}
}
echo "<BR/>";
}
?>
此代码将以下测试用例标识为具有子域:
Attempting sub.main.com/images/sample.jpg.
Hark! A subdomain!: Array ( [0] => sub )
Attempting http://www.example.com/www.google.com/sample.jpg.
Hark! A subdomain!: Array ( [0] => www )
Attempting http://sub2.sub.main.co.uk/images/sample.jpg.
Hark! A subdomain!: Array ( [0] => sub2 [1] => sub )
Attempting sub2.sub.main.co.uk/images/sample.jpg.
Hark! A subdomain!: Array ( [0] => sub2 [1] => sub )