pre_wp_unique_filename_file_list – Hook

apply_filters( ‘pre_wp_unique_filename_file_list’, array|null $files, string $dir, string $filename )

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

Description

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

$filesarray|null: The list of files to use for filename comparisons.
Default null (to retrieve the list from the filesystem).
$dirstring: The directory for the new file.
$filenamestring: The proposed filename for the new file.

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

Used by	Description
wp_unique_filename()`wp-includes/functions.php`	Gets a filename that is sanitized and unique for the given directory.

Version	Description
5.5.0	Introduced.

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