php dirname, basename, pathinfo parse directory path

This article introduces in detail about php dirname, basename, pathinfo parsing directory path. Friends who need to learn can refer to it.

1: string basename(string path[,string suffix]);

gives a string containing the full path to a file. This function returns the base file name. If the file name ends with suffix, this part will also be removed.

In Windows, both slash (/) and backslash () can be used as path separators. In other circumstances it is a slash (/).

Example 1.basename() example, the code is as follows

<?php
$path=网页制作教程http://www.bKjia.c0m，请保留此标记"/home/httpd/html/index.php";
$file=basename($path);       //$fileissetto"index.php"
$file=basename($path,".php");//$fileissetto"index"
?>

The parameter is a string of file path, and the directory after removing the file name is returned
2: string dirname(string path);

The path of __FILE__ is the file where the current code is located

dirname(dirname(__FILE__)); what you get is the directory name above the file
dirname(__FILE__); What you get is the directory name of the layer where the file is located.

Example, the code is as follows

<?php
echo dirname("c:/testweb/home.php");
echo dirname("/testweb/home.php");
?>

Output:

c:/testweb
/testweb

The parameter is one String of file path, returns an array containing three parts: directory name, file name and extension, referenced by dirname, basename, extension respectively 3: array pathinfo($path);

Example 1

<?php
print_r(pathinfo("/testweb/test.txt"));
?>

Output result:

Array
(
[dirname] => /testweb
[basename] => test.txt
[extension] => txt
)

Example 2

<?php
print_r(pathinfo("/testweb/test.txt",PATHINFO_BASENAME));
?>

Output result:

test.txt