PHP: 从字符串中删除 http://, http://www, https://, https:// 并获取域名和 TLD

Question

我想在 PHP 中创建一个函数来删除所有输入，例如

http://
https://
http://www.
https://www.
http://xyz.

来自给定的域名，如

example.com

和returns这样的数组：

'name' => 'example'
'tld' => 'com'

知道怎么做吗？

Answer 1

我认为您不需要删除 protocol、www 甚至 subdomain , 您只需要从 URL 中提取 name 和 tdl 即可。所以试试这个：

正则表达式解决方案：

<?php

$url  = 'https://www.example.com#anchor';
$host = parse_url($url, PHP_URL_HOST);  // www.example.com
preg_match('/(\w+)\.(\w+)$/', $host, $matches);
$array_result = array ( "name" => $matches[1],
                        "tld"  => $matches[2] );
print_r($array_result);

Online Demo

没有正则表达式：

<?php

$url  = 'https://www.example.com#anchor';
$host = parse_url($url, PHP_URL_HOST);  // www.example.com
$host_names = explode(".", $host);
$array_result = array ( "name" => $host_names[count($host_names)-2],
                        "tld"  =>  $host_names[count($host_names)-1] );
print_r($array_result);

Online Demo

/*
 Output:
 *    Array
 *    (
 *        [name] => example
 *        [tld] => com
 *    ) 
*/

Answer 2

尝试以下正则表达式：

(?:^|\s)(?:https?:\/\/)?(?:\w+(?=\.).)?(?<name>.*).(?<tld>(?<=\.)\w+)

在 https://regex101.com/r/lI2lB4/2

查看演示

如果你输入的是

www.google.com
mail.yahoo.com.in
http://microsoft.com
http://www.google.com
http://mail.yahoo.co.uk

捕获的内容将是：

MATCH 1
name       = `google`
tld        = `com`

MATCH 2
name       = `yahoo.com`
tld        = `in`

MATCH 3
name       = `microsoft`
tld        = `com`

MATCH 4
name       = `google`
tld        = `com`

MATCH 5
name       = `yahoo.co`
tld        = `uk`

Answer 3

提取真实 TLD 的正确方法是使用运行 Public Suffix List, only in this way you can correctly extract domains with two-, third-level TLDs (co.uk, a.bg, b.bg, etc.). I recomend use TLD Extract.

的软件包

示例代码如下：

$extract = new LayerShifter\TLDExtract\Extract();

$result = $extract->parse('http://mail.yahoo.co.uk');
$result->getSubdomain(); // will return (string) 'mail'
$result->getHostname(); // will return (string) 'yahoo'
$result->getSuffix(); // will return (string) 'co.uk'

PHP: 从字符串中删除 http://, http://www, https://, https:// 并获取域名和 TLD

PHP: Remove http://, http://www, https://, https:// from String and get the Domain name and TLD

php

regex

preg-replace

Online Demo

Online Demo