<?php $class1 = array("haruki","kaoru","hideto"); $class2 = array("yuki","yuka","manami"); $students = array($class1,$class2); ?> <?php //連想配列 $result = array( "japanese" => 80, "math" => 75, "science" => 90, "history" => 85, "english" => 80 ); ?> <?php $result["japanese"] = 80; $result["math"] = 75; $result["science"] = 90; $result["history"] = 85; $result["english"] = 80; $result ["math"] = 85; //mathの点数を上書き $result ["music"] = 90; //musicの点数を追加 var_dump($result); //確認 ?>