date_query_valid_columns filter-hook . WP 3.7.0

Filters the list of valid date query columns.

Usage

add_filter( 'date_query_valid_columns', 'filter_function_name_2006' );
function filter_function_name_2006( $valid_columns ){
	// filter...

	return $valid_columns;
}

$valid_columns(string[])

An array of valid date query columns. Defaults are 'post_date', 'post_date_gmt', 'post_modified', 'post_modified_gmt', 'comment_date', 'comment_date_gmt', 'user_registered'

Changelog

Where the hook is called

if ( ! in_array( $column, apply_filters( 'date_query_valid_columns', $valid_columns ), true ) ) {

Where in WP core the hook is used WordPress