get_term_children()

最后更新于：2021-11-27 00:55:54

get_term_children( int$term_id, string$taxonomy)

Merge all term children into a single array of their IDs.

参数

$term_id: (int) (Required) ID of Term to get children.
$taxonomy: (string) (Required) Taxonomy Name.

响应

(array|GC_Error) List of Term IDs. GC_Error returned if $taxonomy does not exist.

源文件

文件: gc-includes/taxonomy.php

function get_term_children( $term_id, $taxonomy ) {
	if ( ! taxonomy_exists( $taxonomy ) ) {
		return new GC_Error( 'invalid_taxonomy', __( 'Invalid taxonomy.' ) );
	}

	$term_id = (int) $term_id;

	$terms = _get_term_hierarchy( $taxonomy );

	if ( ! isset( $terms[ $term_id ] ) ) {
		return array();
	}

	$children = $terms[ $term_id ];

	foreach ( (array) $terms[ $term_id ] as $child ) {
		if ( $term_id === $child ) {
			continue;
		}

		if ( isset( $terms[ $child ] ) ) {
			$children = array_merge( $children, get_term_children( $child, $taxonomy ) );
		}
	}

	return $children;
}