Table of Contents
php获取根域名方法汇总,php获取域名汇总
php一段怎提取根域名的正则
怎用php 获取域名对应的IP?
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php获取根域名方法汇总,php获取域名汇总

Jun 13, 2016 am 09:22 AM
php domain name

php获取根域名方法汇总,php获取域名汇总

本文实例汇总了php获取根域名方法,分享给大家供大家参考。具体实现方法如下:

如果你只简单获取当前访问你页面的域名,我们只需要使用php中的函数HTTP_HOST就可以搞定了,如果是提取url根域名是需要正则的,下面就来看看几个具体实例。

如果是获取当前域名是非常的简单的:

复制代码 代码如下:

//获取当前的域名:
echo $_SERVER['SERVER_NAME'];
//获取来源网址,即点击来到本页的上页网址
echo $_SERVER["HTTP_REFERER"];
$_SERVER['REQUEST_URI'];//获取当前域名的后缀
$_SERVER['HTTP_HOST'];//获取当前域名
dirname(__FILE__);//获取当前文件的物理路径
dirname(__FILE__)."/../";//获取当前文件的上一级物理路径
?>

例子1

复制代码 代码如下:

function getUrlRoot($url){
        #添加头部和尾巴
        $url = $url . "/";
        #判断域名
        preg_match("/((\w*):\/\/)?\w*\.?([\w|-]*\.(com.cn|net.cn|gov.cn|org.cn|com|net|cn|org|asia|tel|mobi|me|tv|biz|cc|name|info))
\//", $url, $ohurl);
        #判断IP
        if($ohurl[3] == ''){
                preg_match("/((\d+\.){3}\d+)\//", $url, $ohip);
                return $ohip[1];
        }
        return $ohurl[3];
}

例子2

复制代码 代码如下:

/**
 * 取得根域名
 * @param type $domain 域名
 * @return string 返回根域名
 */
function GetUrlToDomain($domain) {
    $re_domain = '';
    $domain_postfix_cn_array = array("com", "net", "org", "gov", "edu", "com.cn", "cn");
    $array_domain = explode(".", $domain);
    $array_num = count($array_domain) - 1;
    if ($array_domain[$array_num] == 'cn') {
        if (in_array($array_domain[$array_num - 1], $domain_postfix_cn_array)) {
            $re_domain = $array_domain[$array_num - 2] . "." . $array_domain[$array_num - 1] . "." . $array_domain[$array_num];
        } else {
            $re_domain = $array_domain[$array_num - 1] . "." . $array_domain[$array_num];
        }
    } else {
        $re_domain = $array_domain[$array_num - 1] . "." . $array_domain[$array_num];
    }
    return $re_domain;
}

希望本文所述对大家的php程序设计有所帮助。

php一段怎提取根域名的正则

([0-9a-zA-Z-.]+?\.)?[0-9a-zA-Z-]\.[a-zA-Z]{2,4}$
 

怎用php 获取域名对应的IP?

gethostbyname (PHP 3, PHP 4, PHP 5)

gethostbyname -- 获取指定机器名的IP地址

函数格式说明:
string gethostbyname ( string hostname )

返回 hostname 的IP地址

例 1. A simple gethostbyname() example

$ip = gethostbyname('www.example.com');

echo $ip;
?>
 

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