Filters the media upload form action URL.
$form_action_urlstring$typestringwp-admin/includes/media.php:2367media_upload_type_form()wp-admin/includes/media.php:2436media_upload_type_url_form()wp-admin/includes/media.php:2583media_upload_gallery_form()wp-admin/includes/media.php:2746media_upload_library_form() * * @since 2.6.0 * * @param string $form_action_url The media upload form action URL. * @param string $type The type of media. Default 'file'. */ $form_action_url = apply_filters( 'media_upload_form_url', $form_action_url, $type ); $form_class = 'media-upload-form type-form validate'; if ( get_user_setting( 'uploader' ) ) { $form_class .= ' html-uploader'; }Introduced in 2.6.0. Unchanged from 6.7.7 through 7.1.0.
Signature, return type and hooks compared across 5 parsed releases.