php使用数组存储用户数据进行登录的封装函数

$user = array(
    array("user_name" => "lockdatav", "user_pwd" => "123456", "user_temp" => 1),//模版id=1
    array("user_name" => "lockdatav2", "user_pwd" => "123456", "user_temp" => 2),//模版id=2
    array("user_name" => "lockdatav3", "user_pwd" => "123456", "user_temp" => 3),//模版id=3
);

/* 用户登录接口
 * $user, 用户列表
 * $user_name, 用户名
 * $user_pwd, 登录密码
 * */
function getUser($user, $user_name, $user_pwd)
{
    $res = [];
    for ($i = 0; $i < count($user); $i++) {
        if ($user[$i]['user_name'] == $user_name && $user[$i]['user_pwd'] == $user_pwd) {
            $res['data'] = $user[$i];
            die(json_encode($res));
        } else {
            $res['code'] = 0;
            $res['msg'] = "用户名或密码错误";
            $res['data'] = NULL;
            die(json_encode($res));
        }
    }
}

//判断用户是否在用户组中;
$user_name = "lockdatav";
$user_pwd = "123456";
getUser($user, $user_name, $user_pwd);