Php, js, handling array problems

Php and js are beginners who are dealing with arrays. some of them do not understand. After I use ajax to process PHP, I return an Array like this (& nbsp; [0] = & gt; Array & nbsp; (& nbsp; [0] = & gt; 2 & nbsp; [id php, js, handle array problems
For beginners, I don't understand. I use ajax to process PHP and then return such an array.
Array
(
[0] => Array
(
[0] => 2
[Id] => 2
[1] => James
[Name] => James
)
[1] => Array
(
[0] => 3
[Id] => 3
[1] => Li Si
[Name] => Li Si
)
)
How can I not retrieve the array value from the value returned by Ajax using JS? is it wrong to retrieve the value [0] [0? How can we obtain the value?

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We recommend that you search for an instance whose php ajax returns JSON data.
------ Solution --------------------
Use the json_encode () function to process the array you returned, and then return it to the front-end js for use. no error will occur.
------ Solution --------------------
It is best to convert it to json format. It is more convenient to receive data using js.