PHP可以判断服务器os是否为64位吗? [英] Can PHP tell if the server os is 64-bit?

问题描述

我在这里处理Windows.

I am dealing with Windows here.

我知道您可以使用$_SERVER['HTTP_USER_AGENT']变量来检测浏览页面的浏览器的操作系统，但是PHP可以通过任何方式检测服务器的操作系统吗?

I know you can use the $_SERVER['HTTP_USER_AGENT'] variable to detect the OS of the browser viewing the page, but is the any way that PHP can detect the server's OS?

对于我程序的UI，我使用的是PHP网页.我需要读取注册表中位于64位OS上其他位置的密钥(位于Wow6432Node密钥下).

For my program's UI I am using a PHP webpage. I need to read a key in the registry that is in a different location on a 64-bit OS (It is under the Wow6432Node Key).

PHP可以告诉它正在运行什么操作系统吗? PHP可以判断操作系统是64位还是32位吗?

Can PHP tell what OS it is running on? Can PHP tell if the OS is 64-bit or 32-bit?

推荐答案

注意:此解决方案比

Note: This solution is a bit less convenient and slower than @Salman A's answer. I would advice you to use his solution and check for PHP_INT_SIZE == 8 to see if you're on a 64bit os.

如果您只想回答32bit/64bit问题，那么像这样的偷偷摸摸的小函数就可以解决问题(利用intval函数基于32/64位处理int的方式.)

If you just want to answer the 32bit/64bit question, a sneaky little function like this would do the trick (taking advantage of the intval function's way of handling ints based on 32/64 bit.)

<?php
function is_64bit()
{
    $int = "9223372036854775807";
    $int = intval($int);
    if ($int == 9223372036854775807) {
        /* 64bit */
        return true;
    } elseif ($int == 2147483647) {
        /* 32bit */
        return false;
    } else {
        /* error */
        return "error";
    }
}
?>

您可以在此处查看运行中的代码: http://ideone.com/JWKIf

You can see the code in action here: http://ideone.com/JWKIf

注意:如果操作系统为64位，但运行的是32位版本的php，则该函数将返回false(32位)...

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