php - Get a list of siblings term ids from current product category in WooCommerce

Question

I want to retrieve a list of term Ids based on the current category ID.

At the moment I'm using the following code:

$product_cat_items  = get_queried_object();
$product_cat_id     = $product_cat_items->term_id;
$product_cat_child  = get_term($product_cat_id, 'product_cat');
$product_cat_parent = $product_cat_child->parent;

$product_cat_related= get_terms('product_cat', array( 'parent' => $product_cat_parent, 'exclude' => $product_cat_id ));

It's working and I get an array of the terms. But the probem is, that I only need the IDs from the term object to get a list like this:

123,345,678

Is there any way to extract such a list from the $product_cat_related array?

This is the current output:

array(2) {
  [0]=>
  object(WP_Term)#26238 (10) {
    ["term_id"]=>
    int(177)
    ["name"]=>
    string(27) "Name"
    ["slug"]=>
    string(21) "name"
    ["term_group"]=>
    int(0)
    ["term_taxonomy_id"]=>
    int(177)
    ["taxonomy"]=>
    string(11) "product_cat"
    ["description"]=>
    string(0) ""
    ["parent"]=>
    int(140)
    ["count"]=>
    int(8)
    ["filter"]=>
    string(3) "raw"
  }
  [1]=> ....
}

标签： phpwordpresswoocommercesiblingstaxonomy-terms

Answer 1

从 WordPress 4.5.0 版开始，分类法应该通过$args数组中的“分类法”参数传递（参见get_terms()文档）。当查询的对象是分类术语时，
也get_queried_object()已经给出了一个对象。 您也可以在 , 中用作参数，以仅获取术语 ID数组而不是对象数组（请参阅可用参数）。 最后，您将使用 PHP获取一串以逗号分隔的术语 Id。WP_Term
'fields' => 'ids'get_terms()WP_termWP_Term_Query
implode()

因此，您的代码将改为：

$current_term = get_queried_object(); // Already a WP_Term Object

if ( $current_term->parent > 0 ) {
    $siblings_ids = get_terms( array(
        'taxonomy'  => 'product_cat',
        'parent'    => $current_term->parent,
        'exclude'   => $current_term->term_id,
        'fields'    => 'ids',
    ) );

    // Get a string of coma separated terms Ids
    $siblings_list_ids = implode(',', $siblings_ids);

    // Testing output
    echo $siblings_list_ids;
}

测试和工作。