PHP disk_total_space( ) Function

The disk_total_space() function in PHP is an inbuilt function which is used to return the total space of a specified directory. The disk_total_space() function denotes the total space in bytes. It returns the total space on a filesystem or on a disk partition.

The disk_total_space() function returns the total number of bytes on the corresponding filesystem or disk partition for a specified directory inputted as a string.

Syntax:

float disk_total_space ( string $directory )

Parameters: The disk_total_space() function in PHP accepts only one parameter $directory which is directory.

Return Value: It returns the total space on a filesystem or on a disk partition.

Errors And Exception:

1. The disk_total_space() function in PHP may give improper results if a file name is given as parameter instead of a directory.
2. The disk_total_space() function in PHP doesn’t works for remote files.It only works on files which are accessible by the server’s filesystem.

Examples:

Input : disk_total_space("D:");
Output : 10969328844798729

Input : disk_total_space("C:");
Output : 104379834795739795 

Below programs illustrate the disk_total_space() function:

Program 1:

<?php

// specifying directory to check for total space
echo disk_total_space("D:");

?>

Output:

10969328844798729

Program 2:

<?php

// specifying directory to
// check for total space
$space = disk_total_space("C:");

echo "C: drive has a total capacity
                    of $space bytes.";

?>

Output:

C: drive has a total capacity of 104379834795739795 bytes.

Reference:
http://php.net/manual/en/function.disk-total-space.php