Filter rows of a 2d array to remove redundant data

I like to remove 4 columns in each row that are useless/repeated:

• fstransid
• prefix
• nr
• date

The rest I'd like to keep:

• name,
• fsa_code
• fsa_name
• debits_acc
• credits_acc

What's the best way to approach this?

array(18) {
  [0]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "1681"
    ["fsa_name"]=>
    string(17) "asdfasdfasdf"
    ["debits_acc"]=>
    string(6) "546.94"
    ["credits_acc"]=>
    string(4) "0.00"
  }
  [1]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "2621"
    ["fsa_name"]=>
    string(8) "asafafasdfsas"
    ["debits_acc"]=>
    string(4) "0.00"
    ["credits_acc"]=>
    string(5) "60.75"
  }
  [2]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "3540"
    ["fsa_name"]=>
    string(5) "sfdsdfsfssssssssssss"
    ["debits_acc"]=>
    string(4) "0.00"
    ["credits_acc"]=>
    string(5) "60.71"
  }
  [3]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "6060"
    ["fsa_name"]=>
    string(27) "kostnader"
    ["debits_acc"]=>
    string(4) "9.00"
    ["credits_acc"]=>
    string(4) "0.00"
  }
  [4]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "6064"
    ["fsa_name"]=>
    string(12) "asdfasdfasdsdssdssds"
    ["debits_acc"]=>
    string(5) "11.06"
    ["credits_acc"]=>
    string(4) "0.00"
  }
  [5]=>
  array(9) {
    ["fstransid"]=>
    string(4) "4019"
    ["prefix"]=>
    string(3) "PSF"
    ["nr"]=>
    string(3) "854"
    ["date"]=>
    string(10) "2012-06-05"
    ["name"]=>
    string(33) "MY NAME"
    ["fsa_code"]=>
    string(4) "3002"
    ["fsa_name"]=>
    string(35) "assssdsdsdsd"
    ["debits_acc"]=>
    string(4) "0.00"
    ["credits_acc"]=>
    string(6) "445.54"
  }

Try this

//$array is your array

//Array with the identical values
$identical_arr = array_slice($array[0], 0, 4);

//Array of repeated values in arrays
foreach ($array as $inner_array) {
  $differ_arr[] = array_slice($inner_array, 4);
}