WP_Query::is_month() WP 3.1.0

Is the query for an existing month archive?

This is a method of the class: WP_Query

No Hooks.

Return

true/false.

Usage

$WP_Query = new WP_Query();
$var = $WP_Query->is_month();

Code of WP Query::is month: wp-includes/class-wp-query.php ^{WP 5.2}

<?php
public function is_month() {
	return (bool) $this->is_month;
}