Group 2d array rows by column value

Question

I am trying to split an array into 2 or more arrays. Here is what I am trying to do:

My array:

[
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 2, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 2, 'payment_status' => 'Paid', 'payment_type' => 'Online']
]

I am trying to split this array like this:

[
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 1, 'payment_status' => 'Paid', 'payment_type' => 'Online']
]

and

[
    ['oid' => 2, 'payment_status' => 'Paid', 'payment_type' => 'Online'],
    ['oid' => 2, 'payment_status' => 'Paid', 'payment_type' => 'Online']
]

So as you can see the array gets split into multiple arrays based on 'oid' value. Can anyone tell me how to achieve this output?

Answer 1

simple one, copy the items based on oid into a new array:

$input = $yourArray;

$output = array();

foreach($input as $item)
{
    $output[$item['oid']][] = $item;
}

var_dump($output);

output holds an array with oid as key.

you can access your separated array like this:

$output[1]; //for oid 1
$output[2]; //for oid 2

and so on