Calculates the total number of root elements.

Parameters

$elementsarrayrequired

Elements to list.

Return

More Information

Counts the number of top-level items (no children or descendants) in the provided array, and returns that count.

Source

public function get_number_of_root_elements( $elements ) {
	$num          = 0;
	$parent_field = $this->db_fields['parent'];

	foreach ( $elements as $e ) {
		if ( empty( $e->$parent_field ) ) {
			++$num;
		}
	}
	return $num;
}

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