disk_free_space()

disk_free_space() — Returns available space on filesystem or disk partition.

Built-in function of PHP 8.5. The manual lists it as available in PHP 4 >= 4.1.0, PHP 5, PHP 7, PHP 8. This page is the reference card: signature, parameters and return value, plus the changelog and the example the manual provides.

What it does

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

Signature

disk_free_space(string $directory): float|false

Parameters

Return value

Returns the number of available bytes as a float or false on failure.

Example

A runnable snippet:

// $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:");

See also

disk_total_space()

All PHP 8.5 built-in functions

Reference card built from the PHP manual page disk_free_space() (PHP documentation, CC BY 3.0). The page is generated from the manual, so the wording of the parameter and return value text follows php.net.