Filters the file list used for calculating a unique filename for a newly added file.

Returning an array from the filter will effectively short-circuit retrieval from the filesystem and return the passed value instead.

$files array|null

The list of files to use for filename comparisons.
Default null (to retrieve the list from the filesystem).

$dir string

The directory for the new file.

$filename string

The proposed filename for the new file.

File: wp-includes/functions.php. View all references

$files = apply_filters( 'pre_wp_unique_filename_file_list', null, $dir, $filename );