How to get the current directory and relative directory in PHP_PHP tutorial

ringa_lee
Release: 2023-02-28 17:52:02
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How to get the current directory and relative directory in PHP

php There are many ways to get the directory. Here is a record of using php to get the current directory and relative directory. method to avoid confusion again.

<?php
//获取当前文件所在目录,如果 A.php include B.php 则无论写在哪个文件里,都是表示 A.php 文件所在的目录
echo realpath(&#39;.&#39;),&#39;
&#39;;
echo getcwd(),&#39;
&#39;;

// 获取当前文件的上级目录,如果 A.php include B.php 则无论写在哪个文件里,都是表示 A.php 文件所在目录的上级目录
echo realpath(&#39;..&#39;),&#39;
&#39;;

// 获取网站根目录,所有文件里面获取的都是当前项目所在的目录
echo $_SERVER[&#39;DOCUMENT_ROOT&#39;],&#39;
&#39;;

// 获取目录信息
$path_parts = pathinfo(__FILE__);
echo &#39;dirname: &#39;,$path_parts[&#39;dirname&#39;],&#39;
&#39;;//表示代码所在文件的目录,如果 A.php include B.php 并且此代码段写在 B.php ,那么获取的是 B.php 文件所在的目录

echo &#39;basename: &#39;,$path_parts[&#39;basename&#39;],&#39;
&#39;;//同上,获取的是代码所在的文件的文件名称,比如:inc.php

echo $path_parts[&#39;extension&#39;],&#39;
&#39;;//同上,获取的是代码所在的文件的后缀名,比如:php

echo dirname(__FILE__),&#39;
&#39;;//效果同 $path_parts[&#39;dirname&#39;]
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