WordPress at a glance
filter is not described

_wp_post_revision_fields filter-hook . WP 2.6.0

Filters the list of fields saved in post revisions.

Included by default: 'post_title', 'post_content' and 'post_excerpt'.

Disallowed fields: 'ID', 'post_name', 'post_parent', 'post_date', 'post_date_gmt', 'post_status', 'post_type', 'comment_count', and 'post_author'.

Usage

add_filter( '_wp_post_revision_fields', 'filter_function_name_4214', 10, 2 );
function filter_function_name_4214( $fields, $post ){
	// filter...

	return $fields;
}
$fields(array)
List of fields to revision. Contains 'post_title', 'post_content', and 'post_excerpt' by default.
$post(array)
A post array being processed for insertion as a post revision.

Notes

  • Since 4.5.0 The $post parameter was added.

Where the hook is called

_wp_post_revision_fields()
wp-includes/revision.php 56
$fields = apply_filters( '_wp_post_revision_fields', $fields, $post );

Where the hook is used (in WP core)

Does not used.