PHP disk_free_space() Function Usage and Example

PHP Filesystem Reference Manual

The disk_free_space() function can return the available space (in bytes) for the specified directory.

Syntax

float disk_free_space ( string $directory )

Given a string containing a directory, the disk_free_space() function can return the number of available bytes on the corresponding filesystem or disk partition.

Online Example

<?php
   echo disk_free_space("C:\");
   echo "\n";
   echo disk_free_space("E:\");
?gt;

Output Result

224150941696
209571344384

PHP Filesystem Reference Manual