first commit symfony 6

src/Controller/PublishController.php

@@ -0,0 +1,27 @@
+<?php
+namespace App\Controller;
+
+use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\Mercure\HubInterface;
+use Symfony\Component\Mercure\Update;
+
+class PublishController extends AbstractController
+{
+    public function publish($channel, $id, Request $request, HubInterface $hub): Response
+    {
+        $ret=$request->get("msg");
+        $ret["from"]=[];
+        $ret["from"]["id"]="tot";
+        $update = new Update(
+            $channel."-".$id,
+            json_encode(
+                ['ret' => $ret])
+        );
+
+        $hub->publish($update);
+
+        return new Response('published!');
+    }
+}