term_is_ancestor_of

函数



      term_is_ancestor_of ( $term1, $term2, $taxonomy )

参数

(int|object)
$term1
ID or object to check if this is the parent term.
Required: 是
(int|object)
$term2
The child term.
Required: 是
(string)
$taxonomy
Taxonomy name that $term1 and `$term2` belong to.
Required: 是

返回值

(bool) Whether `$term2` is a child of `$term1`.

定义位置

wp-includes/taxonomy.php
, line 1603

引入: 3.4.0

弃用: –

Checks if a term is an ancestor of another term.

You can use either an ID or the term object for both parameters.

function term_is_ancestor_of( $term1, $term2, $taxonomy ) {
	if ( ! isset( $term1->term_id ) ) {
		$term1 = get_term( $term1, $taxonomy );
	}
	if ( ! isset( $term2->parent ) ) {
		$term2 = get_term( $term2, $taxonomy );
	}

	if ( empty( $term1->term_id ) || empty( $term2->parent ) ) {
		return false;
	}
	if ( $term2->parent === $term1->term_id ) {
		return true;
	}

	return term_is_ancestor_of( $term1, get_term( $term2->parent, $taxonomy ), $taxonomy );
}

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