我有以下数组。我需要按嵌套数组键[id]对此数组进行排序:
Array (
[0] => Array ( [id] => 5 [category_id] => 12 )
[1] => Array ( [id] => 3 [category_id] => 12 )
[2] => Array ( [id] => 9 [category_id] => 12 )
[3] => Array ( [id] => 4 [category_id] => 12 )
)