(PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8)
disk_total_space — Returns the total size of a filesystem or disk partition
$directory): float|falseGiven a string containing a directory, this function will return the total number of bytes on the corresponding filesystem or disk partition.
directoryA directory of the filesystem or disk partition.
Returns the total number of bytes as a float
or false on failure.
Example #1 disk_total_space() example
<?php
// $ds contains the total number of bytes available on "/"
$ds = disk_total_space("/");
// On Windows:
$ds = disk_total_space("C:");
$ds = disk_total_space("D:");
?>
Note: This function will not work on remote files as the file to be examined must be accessible via the server's filesystem.