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

disk_free_spaceReturns available space on filesystem or disk partition


disk_free_space ( string $directory ) : float

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



A directory of the filesystem or disk partition.


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.


Example #1 disk_free_space() example

// $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:");


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

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