search
Homephp教程php手册PHP函数getenv使用实例介绍

分享下PHP函数getenv使用实例,getenv函数主要用来获取一个环境变量的值,常见的PHP探针程序都是使用的getenv函数。

getenv(PHP 4, PHP 5)
// getenv — 获取一个环境变量的值
函数说明:www.jbxue.com
string getenv ( string $varname )

// 获取一个环境变量的值。
// 使用 phpinfo() 你可以看到所有环境变量的列表。
参数说明:
$varname 变量名。
函数返回值:
// 返回环境变量 varname 的值, 如果环境变量 varname 不存在则返回 FALSE。
函数应用实例:

<?<span>php
</span><span>//</span><span> getenv() 使用示例</span>
<span>$ip</span> = <span>getenv</span>('REMOTE_ADDR'<span>);
</span><span>//</span><span> 或简单仅使用全局变量($_SERVER 或 $_ENV)</span>
<span>$ip</span> = <span>$_SERVER</span>['REMOTE_ADDR'<span>];
</span>?>

通过phpinfo可以看到整个PHP环境的配置信息,那么想要获取其中一个变量信息要咋办呢?

获取如下信息:

php代码:

<span>echo</span> <span>getenv</span>('userprofile');<span>//</span><span> C:\Windows\system32\config\systemprofile</span>
Statement
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Best Graphic Settings
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. How to Fix Audio if You Can't Hear Anyone
2 weeks agoBy尊渡假赌尊渡假赌尊渡假赌

Hot Tools

MinGW - Minimalist GNU for Windows

MinGW - Minimalist GNU for Windows

This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

DVWA

DVWA

Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

Atom editor mac version download

Atom editor mac version download

The most popular open source editor