WP_Tax_Query::is_first_order_clause()
Determines whether a clause is first-order.
A "first-order" clause is one that contains any of the first-order clause keys ('terms', 'taxonomy', 'include_children', 'field', 'operator'). An empty clause also counts as a first-order clause, for backward compatibility. Any clause that doesn't meet this is determined, by process of elimination, to be a higher-order query.
Method of the class: WP_Tax_Query{}
No Hooks.
Return
true|false
. Whether the query clause is a first-order clause.
Usage
$result = WP_Tax_Query::is_first_order_clause( $query );
- $query(array) (required)
- Tax query arguments.
Changelog
Since 4.1.0 | Introduced. |
WP_Tax_Query::is_first_order_clause() WP Tax Query::is first order clause code WP 6.5.2
protected static function is_first_order_clause( $query ) { return is_array( $query ) && ( empty( $query ) || array_key_exists( 'terms', $query ) || array_key_exists( 'taxonomy', $query ) || array_key_exists( 'include_children', $query ) || array_key_exists( 'field', $query ) || array_key_exists( 'operator', $query ) ); }