基本文法 変数 $a = 100; $name = "名前"; $list1 = ["a", "b", "c", "d", "e"]; $list2 = array("a", "b", "c", "d", "e"); $array = [ "key1" => "value1", "key2" => "value2", "key3" => "value3", ]; unset($array["key1"]); print_r($array); 出力 ec…