Detailed explanation of the summary of methods for obtaining paths and directories in PHP

黄舟
Release: 2023-03-06 12:50:01
Original
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The following editor will bring you a summary of the method of obtaining paths and directories in PHP [must read]. The editor thinks it is quite good, so I will share it with you now and give it as a reference for everyone. Let’s follow the editor and take a look.

PHP’s method of obtaining the directory sum is through magic variables; through super global variables; through related functions, etc.:

<?php

/**

* PHP获取路径或目录实现

*/



//魔术变量,获取当前文件的绝对路径

echo "__FILE__: ========> ".__FILE__; 

echo &#39;<br/>&#39;;



//魔术变量,获取当前脚本的目录

echo "__DIR__: ========> ".__DIR__;

echo &#39;<br/>&#39;;



//dirname返回路径的目录部分,dirname(__FILE__)相当于__DIR__

echo "dirname(__FILE__): ========> ".dirname(__FILE__);

echo &#39;<br/>&#39;;



//$_SERVER[&#39;PHP_SELF&#39;]和$_SERVER[&#39;SCRIPT_NAME&#39;]的结果一般相同,他们都是获取当前脚本的文件名

//只有当php以cgi方式运行时有区别,但是现在几乎找不到以cgi方式运行php了

echo &#39;$_SERVER["PHP_SELF"]: ========> &#39;.$_SERVER[&#39;PHP_SELF&#39;];

echo &#39;<br/>&#39;;



echo &#39;$_SERVER["SCRIPT_NAME"]: ========> &#39;.$_SERVER[&#39;SCRIPT_NAME&#39;];

echo &#39;<br/>&#39;;



//当前执行脚本的绝对路径。记住,在CLI方式运行php是获取不到的

echo &#39;$_SERVER["SCRIPT_FILENAME"]: ========> &#39;.$_SERVER[&#39;SCRIPT_FILENAME&#39;];

echo &#39;<br/>&#39;;



//当前运行脚本所在的文档根目录。在服务器配置文件中定义。

echo &#39;$_SERVER["DOCUMENT_ROOT"]: ========> &#39;.$_SERVER[&#39;DOCUMENT_ROOT&#39;];

echo &#39;<br>&#39;;



//getcwd()返回当前工作目录

echo "getcwd(): ========> ".getcwd();

echo &#39;<br>&#39;;



echo &#39;<br>&#39;;

echo "PHP中文网";
Copy after login

The printing results are as follows [My root directory Is: G:/web]:

The above is the detailed explanation of the method of obtaining paths and directories in PHP [must read]. For more related content, please pay attention to PHP Chinese Net (www.php.cn)!

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