using group by in my multidimensional array

[vivek151189]

I have multidimensional array and I want to use group by as we use in sql queries but didn't gting any idea how to do it

can anyone ?

[vivek151189]

I have this type of arrays

[1] => Array
(
[SR.NO] => 1
[MONTH] => Oct-11
[CLIENT] => xxxx
[OPERATOR] => xxxxxxxx
[SERVICE L1] => yyyyyyyy
[SERVICE L2] => CRBT
[SUBSERVICE L3] => hhhhhh
[CONTENT NAME] => Aaaaaa

[2] => Array
    (
        [SR.NO] => 2
        [MONTH] => Oct-11
        [CLIENT] => xxxxxx
        [OPERATOR] => xxxxxxxxxxxxx
        [SERVICE L1] => hjhjh
        [SERVICE L2] => hh
        [SUBSERVICE L3] => CRBT_SUBSCRIBER
        [CONTENT NAME] =>  kkkkkkk
        )

I want to group this array by the client and operator
but not getting the write way how to do it
does Php provides some internal function to do it ?
or any method I just want the direction how to start with

[Weedpacket]

$grouped_by_operator = array();
foreach($array as $element)
{
    $grouped_by_operator[$element['OPERATOR']][] = $element;
}

[vivek151189]

it working fine grouping the array by operator
but i want it to group by mutiple column
so I done this

foreach($transaction_array as $element)
            {
                $grouped_by_operator[$element['AGREEMENT_DETAILS']][] = $element;
                $grouped_by_operator[$element['SUBSERVICE L3']][] = $element;
            } 

but its giving something different

[vivek151189]

Didn't find another way
so I inserted the whole array in my table and then use group by clause query to do my task
but it will need lot of processing time as the data in array is more than lakh so i will be happier to find if any other way possible