PHP disk_free_space() Function

Return the free space, in bytes, of the C: directory:

<?php
echo disk_free_space("C:");
?>

The output of the code above could be:

109693288448

Definition and Usage

The disk_free_space() function returns the free space, in bytes, of the specified filesystem or disk.

Tip: Look at the disk_total_space() to get the total size of a filesystem or disk.

disk_free_space( directory)

Parameter	Description
directory	Required. Specifies the filesystem or disk to check

Return Value:	The number of free space (in bytes) on success, FALSE on failure
PHP Version:	4.1+