Summary of methods for obtaining paths and directories in PHP

This article mainly introduces a summary of the methods of obtaining paths and directories in PHP. It has a certain reference value. Now I share it with you. Friends in need can refer to it.

How to obtain directories and directories in PHP. 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 "本文来自PHP中文网";

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