<?php

namespace app\api\controller\sse;

use think\Controller;

class Demo extends Controller
{
    public function index()
    {
        // 设置SSE响应头
        header('Content-Type: text/event-stream');
        header('Cache-Control: no-cache');
        header('Connection: keep-alive');

        //添加 X-Accel-Buffering=no

        header('X-Accel-Buffering: no');
        // 禁用输出缓冲
        if (ob_get_level() == 0) ob_start();
        
        for ($i = 0; $i < 10; $i++) {
            // 构建数据
            $data = [
                'time' => date('Y-m-d H:i:s'),
                'message' => 'hallo word ' . ($i+1)
            ];
            
            // 发送数据
            echo "data: " . json_encode($data, JSON_UNESCAPED_UNICODE) . "\n\n";
            
            // 刷新输出缓冲
            flush();
            ob_flush();
            
            // 休眠1秒
            sleep(1);
        }
        
        // 结束连接
        echo "data: {\"complete\":true}\n\n";
        ob_end_flush();
    }
}