dirname
disk_total_space
Filesystem Functions
PHP Manual

# disk_free_space

(PHP 4 >= 4.1.0, PHP 5, PHP 7)

disk_free_space — Returns available space on filesystem or disk partition

### Description

float disk_free_space ( string `$directory` )

Given a string containing a directory, this function will return the number of bytes available on the corresponding filesystem or disk partition.

### Parameters

`directory`

  A directory of the filesystem or disk partition.

  > Note:

  > Given a file name instead of a directory, the behaviour of the function is unspecified and may differ between operating systems and PHP versions.

### Return Values

Returns the number of available bytes as a float or `FALSE` on failure.

### Examples

Example #1 disk_free_space() example

`<?php
// $df contains the number of bytes available on "/"
$df = disk_free_space("/");
// On Windows:
$df_c = disk_free_space("C:");
$df_d = disk_free_space("D:");
?>`

### Notes

> Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.

### See Also

- disk_total_space() - Returns the total size of a filesystem or disk partition

dirname
disk_total_space
Filesystem Functions
PHP Manual