首先感谢所有阅读这篇文章的人。 这是问题。 我正在尝试从此类别数组下的这两个标准类中获取 category_id，并将它们添加到另一个数组中，例如
$categories = array(75,65);
有没有办法不使用 foreach 就可以得到它们？ 它已经在 foreach 中，我需要这个类别才能进行下一步。
[categories] => Array
(
[0] => stdClass Object
(
[product_category_id] => 83125
[category_id] => 75
[product_id] => 10836
[ordering] => 2
[category_parent_id] => 51
[category_type] => product
[category_name] => Men boxer
[category_description] =>
[category_published] => 1
[category_ordering] => 3
[category_left] => 34
[category_right] => 35
[category_depth] => 5
[category_namekey] => product_1494167920_122781373
[category_created] => 1494167920
[category_modified] => 1502169524
[category_access] => all
[category_menu] => 0
[category_keywords] => men swimsuit, men swimming pants, swimsuit, men swimming suit, long sleeve swimming suit
[category_meta_description] => Buy men swimming suit at xxxxx, men long sleeve swimsuit and swimming boxer available, Buy 2 FREE shipping
[category_layout] =>
[category_page_title] => Men Swim Boxer - xxxxx
[category_alias] => men-boxer
[category_site_id] =>
[category_canonical] =>
[category_quantity_layout] =>
[hasbought] =>
)
[1] => stdClass Object
(
[product_category_id] => 83124
[category_id] => 65
[product_id] => 10836
[ordering] => 43
[category_parent_id] => 43
[category_type] => product
[category_name] => Accessory
[category_description] =>
[category_published] => 1
[category_ordering] => 5
[category_left] => 87
[category_right] => 114
[category_depth] => 4
[category_namekey] => product_1476761078_750345878
[category_created] => 1476761078
[category_modified] => 1502169605
[category_access] => all
[category_menu] => 0
[category_keywords] => accessory, beach accessory, swimming accessory, xxxx
[category_meta_description] => Shop accessory at xxxx, beach accessory, fashion accessory, gym accessory and many more, Free shipping & speed delivery
[category_layout] =>
[category_page_title] => Accessory - xxxxxxx
[category_alias] => accessory
[category_site_id] =>
[category_canonical] =>
[category_quantity_layout] =>
[hasbought] =>
)
)
最佳答案
您可以将 array_map 与回调函数一起使用。在不了解您的代码的情况下，我可以假设您可以尝试这样的事情:
function get_category_id($category) {
return $category['category_id'];
}
$category_id = array_map('get_category_id', $categories);
如果您有一个数组数组要映射，您还可以研究 call_user_func_array。我自己仍在学习 PHP，但我认为这应该有所帮助
关于php - 在不使用 foreach 的情况下获取标准类值，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/47862086/