Filters the list of valid date query 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', 'registered', 'last_updated'.

File: wp-includes/class-wp-date-query.php. View all references

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