我遇到了类似的需求，但找不到现成的解决方案，因此我创建了一个基于标准PHP函数parse\\u url（）的函数，并随时间添加到该函数中，以提取我能想到的所有内容。

下面是我的代码和两个输出示例。这将提取子域、根域、tld、扩展、路径、绝对地址等：

/**
 * Parse and check the URL Sets the following array parameters
 * scheme, host, port, user, pass, path, query, fragment, dirname, basename, filename, extension, domain, 
 * domainX, absolute address
 * @param string $url of the site
 * @param string $retdata if true then return the parsed URL data otherwise set the $urldata class variable
 * @return array|mixed|boolean
 */
function parseURL($url,$retdata=true){
    $url = substr($url,0,4)==\'http\'? $url: \'http://\'.$url; //assume http if not supplied
    if ($urldata = parse_url(str_replace(\'&\',\'&\',$url))){
        $path_parts = pathinfo($urldata[\'host\']);
        $tmp = explode(\'.\',$urldata[\'host\']); $n = count($tmp);
        if ($n>=2){
            if ($n==4 || ($n==3 && strlen($tmp[($n-2)])<=3)){
                $urldata[\'domain\'] = $tmp[($n-3)].".".$tmp[($n-2)].".".$tmp[($n-1)];
                $urldata[\'tld\'] = $tmp[($n-2)].".".$tmp[($n-1)]; //top-level domain
                $urldata[\'root\'] = $tmp[($n-3)]; //second-level domain
                $urldata[\'subdomain\'] = $n==4? $tmp[0]: ($n==3 && strlen($tmp[($n-2)])<=3)? $tmp[0]: \'\';
            } else {
                $urldata[\'domain\'] = $tmp[($n-2)].".".$tmp[($n-1)];
                $urldata[\'tld\'] = $tmp[($n-1)];
                $urldata[\'root\'] = $tmp[($n-2)];
                $urldata[\'subdomain\'] = $n==3? $tmp[0]: \'\';
            }
        }
        //$urldata[\'dirname\'] = $path_parts[\'dirname\'];
        $urldata[\'basename\'] = $path_parts[\'basename\'];
        $urldata[\'filename\'] = $path_parts[\'filename\'];
        $urldata[\'extension\'] = $path_parts[\'extension\'];
        $urldata[\'base\'] = $urldata[\'scheme\']."://".$urldata[\'host\'];
        $urldata[\'abs\'] = (isset($urldata[\'path\']) && strlen($urldata[\'path\']))? $urldata[\'path\']: \'/\';
        $urldata[\'abs\'] .= (isset($urldata[\'query\']) && strlen($urldata[\'query\']))? \'?\'.$urldata[\'query\']: \'\';
        //Set data
        if ($retdata){
            return $urldata;
        } else {
            $this->urldata = $urldata;
            return true;
        }
    } else {
        //invalid URL
        return false;
    }
}

示例1：如果您提交示例url(https://developer.wordpress.org/reference/functions/wp_parse_url/) 输出如下：

  array (
    \'scheme\' => \'https\',
    \'host\' => \'developer.wordpress.org\',
    \'path\' => \'/reference/functions/wp_parse_url/\',
    \'domain\' => \'wordpress.org\',
    \'tld\' => \'org\',
    \'root\' => \'wordpress\',
    \'subdomain\' => \'developer\',
    \'basename\' => \'developer.wordpress.org\',
    \'filename\' => \'developer.wordpress\',
    \'extension\' => \'org\',
    \'base\' => \'https://developer.wordpress.org\',
    \'abs\' => \'/reference/functions/wp_parse_url/\',
  )

示例2：其他一些虚构的url，其中包含更多内容http://dev.yoursite.com/some/other/directory/index.php?pg=7 - 现在输出为：

  array (
    \'scheme\' => \'http\',
    \'host\' => \'dev.yoursite.com\',
    \'path\' => \'/some/other/directory/index.php\',
    \'query\' => \'pg=7\',
    \'domain\' => \'yoursite.com\',
    \'tld\' => \'com\',
    \'root\' => \'yoursite\',
    \'subdomain\' => \'dev\',
    \'basename\' => \'dev.yoursite.com\',
    \'filename\' => \'dev.yoursite\',
    \'extension\' => \'com\',
    \'base\' => \'http://dev.yoursite.com\',
    \'abs\' => \'/some/other/directory/index.php?pg=7\',
  )

可能信息比您想要的要多，而且有些信息是多余的，但您可以稍微修改该函数以获得所需的信息，也可以按原样使用它并使用所需的阵列部分。

注意：如果您提交https://developer.wordpress.org 对于wordpress或PHP内置的url解析函数，将不会在输出中定义“路径”。函数的作用是：将路径设置为“/”。