FileSystem Function in PHP: PART 1

Introduction

The PHP file system functions allow you to access and manipulate the filesyaytem. The filesystem functions are part of the PHP core. There is no installation necessary to use these functions. So in this article I describe the PHP filesystem functions basename, chgrp, chmode and chown.

PHP basename function

The PHP basename function returns the trailing component of a path.

Syntax

basename (path, suffix)

Parameters of the basename function

The parameters of the function are:

Parameter	Description
path	It specifies the path to check.
suffix	It specifies the file extention.

Example

An example of the function is:

<?php
$path = "test.php";
//Show filename with file extension
echo basename($path) ."<br/>";
echo basename($path,".php");
?>
Output

PHP chgrp function

The PHP chgrp function changes the file group and it returns true on success or false on failure.
Syntax

chgrp (file, group)

Parameter of the chgrp function

The parameters of the function are:

Parameter	Description
file	It specifies the file to check.
group	It specifies a group name or number.

Example

An example of the function is:

<?php|
chgrp("test.txt","admin")
?>
PHP chmode function

The PHP chmode function changes the permission of the specified file and it returns true on success or false on failure.
Syntax

chmode (file, mode)

Parameter of the chmode function

The parameters of the function are:

Parameter	Description
file	It specifies the file to check.
mode	It specifies the new permission.

Example

An example of the function is:

<?php 
// Read and write for owner, nothing for everybody else 
chmod("test.txt", 0600); 
// Read and write for owner, read for everybody else
chmod("test.txt", 0644);
// Everything for owner, read and execute for others
chmod("test.txt", 0755);
// Everything for owner, read and execute for owner's group
chmod("test.txt", 0750);
?>

PHP chown function

The PHP chown function changes the owner  of the specified file.
Syntax

chown (file, owner)

Parameter of the chown function

The parameters of the function are:

Parameter	Description
file	It specifies the file to check.
owner	It specifies the new owner.

Example

An example of the function is:

<?php
chown("text.txt","atual");
?>