สอบถามเรื่อง การส่งค่าออกจาก Loop for

$i =1;
$arr = array();
while($i<=3){
	$arr[$i] = $i;
	$i++;
}

$arr1 = array(); 
for($j=1;$j<=2;$j++){
	$arr1[$j] = $j;
}


for($k=1;$k<=count($arr);$k++){
	if($arr[$k] == $arr1[$k]){
		echo "มีค่าที่เท่ากัน";
	} else {
		echo $arr[$k];
	}
		echo "<br/>";
}

$arr_car = array();

			$select_car = mysql_query("select * from car_detail order by car_det_id DESC");

			while ($row_car = mysql_fetch_array($select_car)){

				$arr_car[] = $row_car[car_det_id];
			}

			$arr_date = array();

			for($num_sum_ii = 0;$num_sum_ii<$sent_sum_i;$num_sum_ii++){

					$arr_date[] =  $show_book_car_id[$num_sum_ii];

			}

			for($k=0; $k<count($arr_car); $k++){

				if($arr_car[$k] == $arr_date[$k]){

					echo "test";

				} else {
					echo $arr_car[$k].$arr_date[$k];
				}
				echo "<br/>";
			}

                        $arr_car = array();

			$select_car = mysql_query("select * from car_detail order by car_det_id DESC");
                        $row= 0;
			while ($row_car = mysql_fetch_array($select_car)){

				$arr_car[$row] = $row_car[car_det_id];
                           $row++;
			}

			$arr_date = array();

			for($num_sum_ii = 0;$num_sum_ii<$sent_sum_i;$num_sum_ii++){

					$arr_date[$num_sum_ii] =  $show_book_car_id[$num_sum_ii];

			}

			for($k=0; $k<=count($arr_car); $k++){

				if($arr_car[$k] == $arr_date[$k]){

					echo "test";

				} else {
					echo $arr_car[$k].$arr_date[$k];
				}
				echo "<br/>";
			}