Description:
------------
Array copy but don't have time to separate if at once follow function with &...$ar

Test script:
---------------
$ar[0]=1; $ar[1]=2; $ar[2]=3;
$ar2=$ar;

print_r($ar2);
some_func('arg',...$ar);
print_r($ar2); // same as in $ar

function some_func($a, &...$arr){
  $arr[0]='one';
  $arr[1]='two';
  $arr[2]='three';
}