我没有找到类似的问题
1
$form['level1']['level2'][] = array(
'data' => 'some data',
'type' => 'some type',
);
//etc
2
$form = array(
'level1' => array(
'level2' => array(
array(
'data' => 'some data',
'type' => 'some type',
),
//etc
),
),
);