目录

1. 初探 Swoole -- 用 Swoole 启动一个 hello world

2. 内存的妙用 -- PHP终于可以 vs JAVA啦

3. 初级应用 -- 实现用户登录 [撰写中]

4. 展望 -- Swoole 的局限性分析及我个人的期待 [撰写中]

回顾

上节内存的妙用 -- PHP终于可以 vs JAVA啦中, 我们了解了 Swoole 的MYSQL数据库 CURD 操作, 这节我们用 MongoDB来做演示.

开搞

环境说明:

1. MacOS X El Captain 10.11.6

2. PHP 7.0.8 with MongoDB support

3. MongoDB 1.1.8

4. CSS框架 Bootstrap3

首先, 我们来做个用户登录页面
/tpl/login.html

    Login        # Login        Username: [br]        Password: [br]        Submit

PHP代码

我们引入MongoDB

selectDatabase($dbname);            self::$dbname = $dbname;        }        return self::$db;    }    public static function id($id){        return new MongoDB\BSON\ObjectID($id);    }    public function __call($name, $arguments){        return self::$db->selectCollection(self::$dbname, $name);    }}

Swoole启动代码

_GLOBAL_SESSION = [];
$http->mongo = Mongo::instance('db');
$http->db = new \stdClass();

使用预加载, 提前将用户数据加载到内存. 登录都无需网络/磁盘IO

if('user'){
echo "加载用户数据\n";
$http->db->user = [];
$users = $http->mongo->user->find([]);
foreach ($users as $i => $user) {
$user['_id'] = $user['_id']->__toString();
$http->db->user[$user['username']] = $user;
}
echo "用户数据加载完成\n\n";
unset($user);unset($users);
}
主逻辑：

on('request', function(swoole_http_request $req, swoole_http_response $res) use($http) {

if (!isset($req->cookie) || !isset($req->cookie['sid']) || !$req->cookie['sid']) {    $req->cookie['sid'] = md5(password_hash(time().mt_rand(100000, 999999), 1));    $res->cookie('sid', $req->cookie['sid'], time() + 60 * 60 * 24 * 365 * 10, '/', '', false, true);}$_SESS_ID = $req->cookie['sid'];if (!is_array($http->_GLOBAL_SESSION[ $_SESS_ID ])) $http->_GLOBAL_SESSION[ $_SESS_ID ] = [];$_SESSION = &$http->_GLOBAL_SESSION[ $_SESS_ID ];if ( $req->server['request_uri'] == '/' ) {    $res->status(302);    $res->header('Location', '/login/');    $res->end();    return;}elseif ( $req->server['request_uri'] == '/login/' ) {    if ($_SESSION['user']) {        $res->status(302);        $res->header('Location', '/i/');        $res->end();        return;    }    $html = file_get_contents(dirname(__FILE__).'/tpl/'.'login.html');    $res->write($html);    $res->end();    unset($html);    return;}elseif ( $req->server['request_uri'] == '/dologin/' ) {    $user = $http->db->user[$req->post['username']];    if (!$user || !password_verify($req->post['password'], $user['password'])) {        $res->write('bad_account_or_password');        $res->end();        return;    }    $_SESSION['user']           = $user;    unset($user);    $res->status(302);    $res->header('Location', '/vul/');    $res->end();    return;}elseif ( $req->server['request_uri'] == '/i/' ) {    $res->write('You currently logged in as'.$_SESSION['user']['username']);    $res->end();    return;}$res->status(404);$res->end();return;

});

关键字：php, swoole

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