<?php
// Ex02_query.php (Answer)

function getEmployees()
{
    $dsn = "mysql:host=localhost;dbname=employee_db;charset=utf8";
    $username = "rezouser";
    $password = "Rezo_0000";
    try {
        $pdo = new PDO($dsn, $username, $password);
        $pdo->setAttribute(PDO::ATTR_ERRMODE, PDO::ERRMODE_EXCEPTION);
        $stmt = $pdo->query("SELECT * FROM employees");
        $results = $stmt->fetchAll(PDO::FETCH_ASSOC);
        return $results;
    } catch (PDOException $e) {
        // エラーが発生した場合は例外メッセージを返すか、空の配列を返す
        return [];
    } finally {
        $pdo = null;
    }
}