如何插入动态post数组php？

i am sorry this hard to explain, but i will try as i know.

I have multiple input post with custom condition, custom condition that mean can be as much as it can.

HTML

<input name="type[]" value="type 1">
    <input name="var[]" value="Var 1">
    <input name="var[]" value="Var 2">
    <input name="var[]" value="Var 3">
<input name="type[]" value="type 2">
    <input name="var[]" value="Var 1 for type 2">
    <input name="var[]" value="Var 2 for type 2">

for input name type[] can be added as custom via JQuery, and also for var[] but if var[] added, it will be inserted as array under type[]

and i want to serialize that value to database with this array result

Array ( 
[0] => Array ( 
    [type 1] => Array ( 
        [0] => Array ( 
            [menu_name] => var 1
        ) 
        [1] => Array ( 
            [menu_name] => var 2
        ) 
        [2] => Array ( 
            [menu_name] => var 3
        ) 
    ) 
) 
[1] => Array ( 
    [Type 2] => Array ( 
        [0] => Array ( 
            [menu_name] => Var 1 for type 2
        )
        [1] => Array ( 
            [menu_name] => Var 2 for type 2
        )
    ) 
) 
)

But the problem is, i dont exactly know how the logic to insert that array with $_POST syntax, so the result will be as like array result above

Simply add braces [] to the names of inputs

<input name="type[0]" value="type 1">
<input name="type[0][var][]" value="Var 1">
<input name="type[0][var][]" value="Var 2">
<input name="type[0][var][]" value="Var 3">
<input name="type[1]" value="type 2">
<input name="type[1][var][]" value="Var 1 for type 2">
<input name="type[1][var][]" value="Var 2 for type 2">

EDIT

$types = $_POST['type'];
$types[0]['var'][1];

You need this HTML structure to post data as you want :

<input name="type[1][var][1]" value="type 1 var 1">
<input name="type[1][var][2]" value="type 1 var 2">
<input name="type[1][var][3]" value="type 1 var 3">
<input name="type[2][var][1]" value="type 2 var 1">
<input name="type[2][var][2]" value="type 2 var 2">

</div>