apply_filters( "{$action}_prefilter", string[] $file )

Filters the data for a file before it is uploaded to WordPress.

Description

The dynamic portion of the hook name, $action, refers to the post action.

Possible hook names include:

  • wp_handle_sideload_prefilter
  • wp_handle_upload_prefilter

Parameters

$file

(string[]) An array of data for the file. Reference to a single element of $_FILES.

Source

File: wp-admin/includes/file.php

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Used By

Used By Description
wp-admin/includes/file.php: _wp_handle_upload()

Handles PHP uploads in WordPress.

Changelog

Version Description
4.0.0 Converted to a dynamic hook with $action.
2.9.0 Introduced.

© 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/action_prefilter