我从postmeta获取post_id,方法如下:
$post_id = $wpdb->get_results("SELECT post_id FROM $wpdb->postmeta WHERE (meta_key = 'mfn-post-link1' AND meta_value = '". $from ."')");
当我尝试使用print_r($post_id);
时,我的数组长这样:
Array
(
[0] => stdClass Object
(
[post_id] => 140
)
[1] => stdClass Object
(
[post_id] => 141
)
[2] => stdClass Object
(
[post_id] => 142
)
)
我不知道如何遍历它,也不知道如何获得类似这样的数组
Array
(
[0] => 140
[1] => 141
[2] => 142
)
你有什么想法可以帮我完成这个吗?
$array = json_decode($object, true)
? - akshaynagpal