Question

我在post meta中更新数组时遇到问题。数组保持覆盖而不是推入新值。

add_action('wp_ajax_update_item_received', 'update_item_received');

function update_item_received() {
$date = date('Y/m/d H:i'); 
$order_id = $_POST['order_id'];
$item_id = $_POST['item_id'];
$received_array = get_post_meta($order_id,"received_array");

if(is_array($received_array[0])) {
    //merge new with old

    $received_array_2[$item_id] = $date;
    array_merge($received_array[0],$received_array_2);
    update_post_meta($order_id,"received_array",$received_array);

} else {

    $received_array = array("$item_id"=>"$date");
    add_post_meta($order_id,"received_array",$received_array);

}

我使用array_merge但新数组与旧数组合并。它变成了一个多维数组？

我如何解决？

Answer 1

get_post_meta()函数默认将meta作为数组返回。如果您知道您将始终只有一个，请使用第三个参数true，这意味着它将只返回一个元项目。

然后你可以添加它：

function update_item_received() {
  $date = date('Y/m/d H:i'); 
  $order_id = $_POST['order_id'];
  $item_id = $_POST['item_id'];
  $received_array = get_post_meta($order_id, "received_array", true);

  if(is_array($received_array)) {
      $received_array[$item_id] = $date;
      update_post_meta($order_id, "received_array", $received_array);
  } else {
      $received_array = array("$item_id"=>"$date");
      add_post_meta($order_id, "received_array", $received_array);
  }
}

word meta中的wordpress更新数组

1 个答案: