Detailed explanation of how to get file name and extension in php

This article mainly introduces the method of obtaining the file name and extension in PHP. The editor thinks it is quite good. Now I will share it with you and give it as a reference. Let’s follow the editor and take a look.

php gets the file name and extension

1.basename()-returns the file name of the path

Please see the following php code:

<?php

$path =
"/usr/www/html/index.php";

echo basename($path)."<br>";

//如果选择suffix则忽略扩展名

echo basename($path,".php");

?>

Run result:

index.php

index

2.dirname()-Returns the file path of the current script!

php code:

<?php

//——FILE返回文件完整路径

$dir = dirname(FILE);

echo $dir;

?>

Running result:

F:\web\zend\exercise

3.pathinfo() returns an associated arraycontaining path information.

Includes the following array units: path name dirname, file name basename and extension name extension.

Please see the simple code demonstration below:

<?php

$path =
"/usr/www/html/index.php";

$pathinfo 
= pathinfo($path);

echo "目录名称：$pathinfo[dirname]<br>";

echo "文件名称：$pathinfo[basename]<br>";

echo "扩展名：$pathinfo[extension]";

?>

Run result:

Directory name:/usr/www/html

File name: index.php

Extension: php

##4.realpath -- Returns the normalized absolute path name

The php code is as follows:

<?php

$path =
"./exercise/php.txt";

$realpath 
= realpath($path);

echo $realpath;

?>

Finally, pay attention to a little tip: File paths with different pathsOperatorsPossibly, different, you can use "/" and "\" under Windows,

Only "/" can be used under Linux, so when developing, it is recommended to use "/", as I wrote the file path above!

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