php 用php获取主机名的最佳方法
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Best way to get hostname with php
提问by mattweg
I have a php application that is installed on several servers and all of our developers laptops. I need a fast and reliable way to get the server's hostname or some other unique and reliable system identifier. Here's what we have thought of so far:
我有一个安装在多台服务器和我们所有开发人员笔记本电脑上的 php 应用程序。我需要一种快速可靠的方法来获取服务器的主机名或其他一些唯一且可靠的系统标识符。到目前为止，这是我们想到的：
<? $hostname = (!empty($_ENV["HOSTNAME"])) ? $_ENV["HOSTNAME"] : env('HOSTNAME'); ?>
<? $hostname = (!empty($_ENV["HOSTNAME"])) ? $_ENV["HOSTNAME"] : env('HOSTNAME'); ?>
<? $hostname = gethostbyaddr($_SERVER['SERVER_ADDR']); ?>
<? $hostname = gethostbyaddr($_SERVER['SERVER_ADDR']); ?>
<? $hostname = exec('hostname'); ?>
<? $hostname = exec('hostname'); ?>
What do you think?
你怎么认为？
采纳答案by zombat
What about gethostname()?
怎么样的gethostname（） ？
Edit: This might not be an option I suppose, depending on your environment. It's new in PHP 5.3. php_uname('n')might work as an alternative.
编辑：我认为这可能不是一个选项，具体取决于您的环境。它是 PHP 5.3 中的新功能。 php_uname('n')可以作为替代。
回答by ghbarratt
$hostname = gethostname();
$hostname = gethostname();
For PHP < 5.3.0 but >= 4.2.0 use this:
对于PHP < 5.3.0 但 >= 4.2.0 使用这个：
$hostname = php_uname('n');
$hostname = php_uname('n');
For PHP < 4.2.0 use this:
对于 PHP < 4.2.0 使用这个：
$hostname = getenv('HOSTNAME');
if(!$hostname) $hostname = trim(`hostname`);
if(!$hostname) $hostname = exec('echo $HOSTNAME');
if(!$hostname) $hostname = preg_replace('#^\w+\s+(\w+).*$#', '', exec('uname -a'));
回答by Pedro
You could also use...
你也可以用...
$hostname = getenv('HTTP_HOST');
回答by Hammad Khan
The accepted answer gethostname() may infact give you inaccurate value as in my case
接受的答案 gethostname() 实际上可能会给你不准确的值，就像我的情况一样
gethostname() = my-macbook-pro (incorrect)
$_SERVER['host_name'] = mysite.git (correct)
gethostname() = my-macbook-pro (incorrect)
$_SERVER['host_name'] = mysite.git (correct)
The value from gethostname() is obvsiously wrong. Be careful with it.
gethostname() 的值显然是错误的。小心点。
Update as corrected by the comment
根据评论更正更新
Host name gives you computer name, not website name, my bad. My result on local machine is
主机名给你计算机名，而不是网站名，我不好。我在本地机器上的结果是
gethostname() = my-macbook-pro (which is my machine name)
$_SERVER['host_name'] = mysite.git (which is my website name)
回答by Mike Grace
I am running PHP version 5.4 on shared hosting and both of these both successfully return the same results:
我在共享主机上运行 PHP 5.4 版，这两个都成功返回了相同的结果：
php_uname('n');
gethostname();
