<?php

// Defining first array. This one is already sorted.
$arr1 = [
  '123',
  '8E7',
  '8EW',
  '8S4',
  '925',
  '928',
  '9S0',
  '9SQ',
];

// Second array contains the same elements as the first one,
// but it is not sorted.
$arr2 = [
  '123',
  '925',
  '928',
  '8E7',
  '8EW',
  '8S4',
  '9S0',
  '9SQ',
];

// Perform sorting of first (already sorted) array
sort($arr1);

// Perform sorting of first (already sorted) array
sort($arr2);

// Print out checks. Sorted arrays should have the same elements
// on the same positions
for ($i = 0; $i < count($arr1); $i++) {
    if ($arr1[$i] === $arr2[$i]) {
        $status = 'OK';
    } else {
        $status = 'BUG';
    }
    echo $arr1[$i] . ' : ' . $arr2[$i] . ' : ' . $status . PHP_EOL;
}

// Result:
//
//   123 : 123 : OK
//   8E7 : 925 : BUG
//   8EW : 928 : BUG
//   8S4 : 8E7 : BUG
//   925 : 8EW : BUG
//   928 : 8S4 : BUG
//   9S0 : 9S0 : OK
//   9SQ : 9SQ : OK