scala - for,if文のまとめて書くやりかた（phpと比較）

$array1 = Array(1,2,3);
$array2 = Array(1,2,3);

1,2,3
2,2,4
3,2,5

for ($i=0;$i<count($array1);$i++) {
  for ($j=0;$j<count($array2);$j++) {
    if( $j % 2 == 0 )
    {
      $a = $i + $j;
      echo $array1[$i] . "," . $array2[$j] . "," . $a . "¥n";
    }
  }
}

foreach( $val as $array1 ){
  foreach( $val2 as $array2 ){
    if( $val2 % 2 == 0 )
    {
      $a = $val + $val2;
      echo $val . "," . $val2 . "," . $a . "¥n";
    }
  }
}

for (val1 <- array1) {
  for (val2 <- array2) {
    if (val2 % 2 == 0) {
      val a = val1 + val2
      println(val1 + "," + val2 + "," a)
    }
  }
}

for {
  val1 <- array1
  val2 <- array2 if val2 % 2 == 0
  a = val1 + val2
} {
  println(val1 + "," + val2 + "," a)
}