i have two arrays like this

first array

```
Array
(
    [0228] => Array
        (
            [name] => ''
            [address] => ''
        )

    [0275] => Array
        (
            [name] => ''
            [address] => ''
        )
)

```

second array

```
Array
(
    [0228] => Array
        (
            [start_date] => ''
            [payment] => ''
        )

    [0275] => Array
        (
            [start_date] => ''
            [payment] => ''
        )
)

```

i want to combine these two by matching array keys and get out put like

```
Array
(
    [0228] => Array
        (
            [name] => ''
            [address] => ''
            [start_date] => ''
            [payment] => ''
        )

    [0275] => Array
        (
            [name] => ''
            [address] => ''
            [start_date] => ''
            [payment] => ''
        )
)

```

how to do this ? is there any built in function in php for these kind of array combine?

Regards