do_action( 'admin_head-media-upload-popup' )

Fires when scripts enqueued for the admin header for the legacy (pre-3.5.0) media upload popup are printed.

Source

File: wp-admin/includes/media.php

View on Trac

Changelog

Version Description
2.9.0 Introduced.

© 2003–2021 WordPress Foundation
Licensed under the GNU GPLv2+ License.
https://developer.wordpress.org/reference/hooks/admin_head-media-upload-popup