php数组除开重复值

$arr=array(38,39,41,38,39,41,42,43);

$c=array_count_values($arr);

function foo($v){

    global $c;

    if($c[$v]==1){

		  return true;

	}

	return false;

}

print_r(array_filter($arr,'foo'));

$ar = array(38, 39, 40, 41, 38, 39, 40, 41, 42, 43);

foreach(array_count_values($ar) as $k=>$v)

  if($v == 1) $res[] = $k;



print_r($res);