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PHPで引数を可変長で渡すテストプログラムを実装しました。

 // 可変長引数で合計を計算する
    function sum(...$numbers)
    {
      $total = 0;
      foreach($numbers as $number){
        $total += $number;
      }
      return $total;
    }

    // ブラウザ表示
    function disp($num){
      echo "<p class=test1>${num}</p>";
    }

    $total1 = sum(3,4,5);
    disp($total1);

    $total2 = sum(1,3,5,7,9,11);
    disp($total2);

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