PHP配列一緒にいくつかの変数、対応する変数名と値

<?php
$firstname = "Bill";
$lastname = "Gates";
$age = "60";

$result = compact("firstname", "lastname", "age");

print_r($result);
?>

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アレイ（[FIRSTNAME ] =>ビル[姓] =>ゲイツ[年齢] => 60）