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Advanced Technical Guide for Building Brain Map Applications with PHP and Vue
Introduction:
Brain maps are widely used as an intuitive and concise graphical display method. Used in scenarios such as project management, knowledge organization, and mind mapping. In this article, we will explore how to build a powerful mind mapping application using PHP and Vue. We will make our mind mapping application more practical and easier to use by introducing some advanced technologies, including data persistence, real-time collaborative editing, drag-and-drop and other functions.
<?php $servername = "localhost"; $username = "your_username"; $password = "your_password"; $dbname = "your_database"; // 创建连接 $conn = new mysqli($servername, $username, $password, $dbname); // 检查连接是否成功 if ($conn->connect_error) { die("连接失败: " . $conn->connect_error); } // 执行SQL查询和操作 $sql = "SELECT * FROM mindmaps"; $result = $conn->query($sql); if ($result->num_rows > 0) { // 输出数据 while($row = $result->fetch_assoc()) { echo "id: " . $row["id"]. " - Name: " . $row["name"]. "<br>"; } } else { echo "0 结果"; } // 关闭连接 $conn->close(); ?>
<?php use RatchetMessageComponentInterface; use RatchetConnectionInterface; require 'vendor/autoload.php'; class MindmapServer implements MessageComponentInterface { protected $clients; public function __construct() { $this->clients = new SplObjectStorage; } public function onOpen(ConnectionInterface $conn) { $this->clients->attach($conn); echo "有新连接加入! "; } public function onMessage(ConnectionInterface $from, $msg) { foreach ($this->clients as $client) { if ($from !== $client) { $client->send($msg); } } } public function onClose(ConnectionInterface $conn) { $this->clients->detach($conn); echo "有连接关闭! "; } public function onError(ConnectionInterface $conn, Exception $e) { echo "发生错误:{$e->getMessage()} "; $conn->close(); } } $server = IoServer::factory( new HttpServer( new WsServer( new MindmapServer() ) ), 8080 ); $server->run(); ?>
In Vue, we can use the WebSocket API to communicate with the server to achieve real-time collaborative editing. The following is a sample code using Vue:
var ws = new WebSocket('ws://localhost:8080'); // 连接成功时触发 ws.onopen = function() { console.log('WebSocket连接成功!'); }; // 收到消息时触发 ws.onmessage = function(e) { var message = e.data; console.log('收到消息:' + message); }; // 发送消息 ws.send('Hello, WebSocket!');
<template> <div> <draggable v-model="mindmapData" class="mindmap"> <div v-for="(item, index) in mindmapData" :key="index"> {{ item.text }} </div> </draggable> </div> </template> <script> import draggable from 'vuedraggable'; export default { components: { draggable }, data() { return { mindmapData: [ { text: '节点1' }, { text: '节点2' }, { text: '节点3' } ] }; } }; </script>
In this way, we can change the layout of the brain map by dragging nodes.
Conclusion:
Through this article, we learned some advanced technologies for building mind mapping applications using PHP and Vue, including data persistence, real-time collaborative editing, and drag-and-drop functions. These technologies can make our mind mapping applications more practical and easier to use. I hope this article can provide readers with some reference and guidance in building mind mapping applications.
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