按顺序在WordPress上显示自定义字段

Question

我在这里遇到一种情况，我得到的数组自定义字段不按顺序排列。我可以知道如何按顺序排列所有自定义字段吗？

我用来获取自定义数组的函数是：

$title = get_post_meta($post_id, "cap-display_name", false);
foreach($title as $a){
    echo 'hello '.$a.'<br><br>';
}

但是，我得到的输出是：

hello this is first 
hello this is second 
hello this is third
hello this is six 
hello this is four 
hello this is five 
hello this is seven

假定的输出是：

hello this is first
hello this is second
hello this is third
hello this is four
hello this is five
hello this is six
hello this is seven

我可以知道如何获得上述输出吗？

print_r（$title） 将得到这个：

数组 （ [0

Answer 1

我认为您需要为此运行自定义SQL。像这样：

   global $wpdb; // your DB object
   $sql = "SELECT m.meta_value FROM wp_postmeta m where m.meta_key = 'cap-display_name' and m.post_id = {$post_id} order by m.meta_id";
   $results = $wpdb->get_results( $sql );
   foreach( $results as $result )
   {
      echo 'hello '.$result->meta_value.'<br><br>';
   }