PHP Manual
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(PHP 4 >= 4.1.0, PHP 5)
Given a string containing a directory, this function will return the total number of bytes on the corresponding filesystem or disk partition.
Example 1. disk_total_space() example
<?php// $df contains the total number of bytes available on "/"$df = disk_total_space("/");// On Windows:disk_total_space("C:");disk_total_space("D:");?>
Note: This function will not work on remote files as the file to be examined must be accessible via the servers filesystem.
See also disk_free_space()