在wordpress中獲取一個類別id的數組？

Question

$cats= get_categories(array(
    'order'     => 'ASC', 
    'orderby'     => 'id', 

    'hierarchical'    => 0, 
    'hide_empty'    => 0, 
    'taxonomy'     => 'edu_year' 
)); 

我想生成一個變量，其中包含從get_categories函數檢索到的值的ID的數組。

Answer 1

根據相關文檔返回：

$category->term_id 
$category->name 
$category->slug 
$category->term_group 
$category->term_taxonomy_id 
$category->taxonomy 
$category->description 
$category->parent 
$category->count 
$category->cat_ID 
$category->category_count 
$category->category_description 
$category->cat_name 
$category->category_nicename 
$category->category_parent 

所以：

$output_categories = array(); 
$categories=get_categories($args); 
    foreach($categories as $category) { 
    $output_categories[$category->cat_ID] = $category->name; 
} 

然後$output_categories是你所需要的東西。

Answer 2

當使用get_terms：

<?php 

$categories_ids = get_terms(
    array('category'), // Taxonomies 
    array('fields' => 'ids') // Fields 
); 

?>