有下面的数组并需要访问 id 但无法使其工作。不知道如何访问第三级数组。
Array
(
[0] => Array
(
[0] => Array
(
[id] => 1
)
)
[1] => Array
(
[0] => Array
(
[id] => 2
)
)
[2] => Array
(
[0] => Array
(
[id] => 3
)
)
[3] => Array
(
)
[4] => Array
(
[0] => Array
(
[id] => 5
)
)
}