WordPress at a glance
filter is not described

upload_post_params filter-hook . WP 3.3.0

Filters the media upload post parameters.

Использование

add_filter( 'upload_post_params', 'filter_function_name_1044' );
function filter_function_name_1044( $post_params ){
	// filter...

	return $post_params;
}
$post_params(array)
An array of media upload parameters used by Plupload.

Changelog

Since 3.3.0 Introduced.
Since 3.1.0 As 'swfupload_post_params'

Where the hook is called

media_upload_form()
upload_post_params
wp-admin/includes/media.php 2135
$post_params = apply_filters( 'upload_post_params', $post_params );

Where in WP core the hook is used WordPress

Usage not found.