PHP框架在社交媒体应用程序开发中的应用

// Laravel 内容模型
class Post extends Model
{
    protected $fillable = ['content'];

    public function user()
    {
        return $this->belongsTo('App\User');
    }
}

// 控制器中的帖子存储逻辑
public function store(Request $request)
{
    $post = new Post;

    $post->content = $request->content;
    $post->user_id = Auth::id();

    $post->save();
}

// CodeIgniter 消息模型
class Message_model extends CI_Model
{
    public function get_chat_messages($sender, $receiver)
    {
        $this->db->select('*');
        $this->db->from('messages');
        $this->db->where('(sender_id = ' . $sender . ' AND receiver_id = ' . $receiver . ') OR (sender_id = ' . $receiver . ' AND receiver_id = ' . $sender . ')');

        return $this->db->get()->result_array();
    }
}

// 控制器中的消息发送逻辑
public function send_chat_message()
{
    $sender_id = $this->input->post('sender_id');
    $receiver_id = $this->input->post('receiver_id');
    $message = $this->input->post('message_content');

    $data = array(
        'sender_id' => $sender_id,
        'receiver_id' => $receiver_id,
        'message_content' => $message
    );

    $this->Message_model->add_chat_message($data);
}

// Symfony 用户朋友关系模型
class UserFriends implements UserAwareInterface
{
    /** @var User $user */
    private $user;

    /** @var User $friend */
    private $friend;

    /**
     * {@inheritdoc}
     */
    public function setUser(User $user = null)
    {
        $this->user = $user;
        return $this;
    }
}

// 控制器中的好友添加逻辑
public function addFriendAction(User $friend)
{
    $em = $this->getDoctrine()->getManager();
    $user = $this->getUser();

    if ($user->hasFriend($friend)) {
        throw new LogicException('User already has this friend.');
    }

    $userFriend = new UserFriends();
    $userFriend->setUser($user);
    $userFriend->setFriend($friend);

    $em->persist($userFriend);
    $em->flush();

    return new Response('', 204);
}