apply_filters( 'wp_unique_filename', string $filename, string $ext, string $dir, callable|null $unique_filename_callback, string[] $alt_filenames, int|string $number )

Filters the result when generating a unique file name.


Parameters

$filename

(string) Unique file name.

$ext

(string) File extension. Example: ".png".

$dir

(string) Directory path.

$unique_filename_callback

(callable|null) Callback function that generates the unique file name.

$alt_filenames

(string[]) Array of alternate file names that were checked for collisions.

$number

(int|string) The highest number that was used to make the file name unique or an empty string if unused.


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Source

File: wp-includes/functions.php

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Changelog

Changelog
Version Description
5.8.1 The $alt_filenames and $number parameters were added.
4.5.0 Introduced.

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