array_merge(): Expected parameter 2 to be an array

[carlomigueldy]

Whenever I try to dispatch an event I get this error

<warning>PHP Warning:  array_merge(): Expected parameter 2 to be an array, null given in /home/carlomigueldy/playground/laravel-chat-app/api/vendor/pusher/pusher-php-server/src/Pusher.php on line 518</warning>

Can anyone help me out?

This is my MessageSent() class code

<?php

namespace App\Events;

use App\Models\ChatMessage;
use App\Models\User;
use Illuminate\Broadcasting\Channel;
use Illuminate\Broadcasting\InteractsWithSockets;
use Illuminate\Broadcasting\PresenceChannel;
use Illuminate\Broadcasting\PrivateChannel;
use Illuminate\Contracts\Broadcasting\ShouldBroadcast;
use Illuminate\Contracts\Broadcasting\ShouldBroadcastNow;
use Illuminate\Foundation\Events\Dispatchable;
use Illuminate\Queue\SerializesModels;

class MessageSent implements ShouldBroadcast
{
    use Dispatchable, InteractsWithSockets, SerializesModels;

    public $message;

    /**
     * Create a new event instance.
     *
     * @return void
     */
    public function __construct($message = 'No message')
    {
        $this->message = $message;
    }

    public function broadcastAs () {
        return 'message-sent';
    }

    // public function broadcastQueue () {
    //     return 'broadcastable';
    // }

    public function broadcastWith () {
        return [
            'text' => 'Awesome'
        ];
    }

    /**
     * Get the channels the event should broadcast on.
     *
     * @return \Illuminate\Broadcasting\Channel|array
     */
    public function broadcastOn()
    {
        return new Channel('chat');
    }
}

[lisandrop05]

I have the same problem seems to me that the code in the function that calls for trigger function, at least on laravel 8 is not sending the right parameters:

this is the line 112: in ...Illuminate/Broadcasting..../PusherBroadcaster.php

$response = $this->pusher->trigger(
$this->formatChannels($channels), $event, $payload, $socket, true
);

and this is the function in pusher-php-server/Pusher.php line 473:

public function trigger($channels, $event, $data, $params = array(), $already_encoded = false)

I changed to:

public function trigger($channels, $event, $params = array(), $already_encoded = false, $data=null)

and the problem was solved for me at least for now, I'm very new on this.

additionally the PusherBroadcaster.php it's expecting a response to be an array and an object is sent back so I change the line # 542 in the Pusher.php as well from :

return $result;

to

return $response;

hope it helps at least for now until the problem is fixed

[carlomigueldy]

I have the same problem seems to me that the code in the function that calls for trigger function, at least on laravel 8 is not sending the right parameters:

this is the line 112: in ...Illuminate/Broadcasting..../PusherBroadcaster.php

$response = $this->pusher->trigger(
$this->formatChannels($channels), $event, $payload, $socket, true
);

and this is the function in pusher-php-server/Pusher.php line 473:

public function trigger($channels, $event, $data, $params = array(), $already_encoded = false)

I changed to:

public function trigger($channels, $event, $params = array(), $already_encoded = false, $data=null)

and the problem was solved for me at least for now, I'm very new on this.

additionally the PusherBroadcaster.php it's expecting a response to be an array and an object is sent back so I change the line # 542 in the Pusher.php as well from :

return $result;

to

return $response;

hope it helps at least for now until the problem is fixed

Thank you for sharing your work-around!!

[carlomigueldy]

It works now but my issue now that it is returning "true" instead of the array from broadcastWith()

[lisandrop05]

It works now but my issue now that it is returning "true" instead of the array from broadcastWith()

I had same problem, after my workaround, I solved it by restoring the pusher to the original, and creating a new workaround:

there is three problems for me when calling from laravel 8 when calling trigger function of Pusher.php

Here is the line 112: in ...Illuminate/Broadcasting..../PusherBroadcaster.php
$response = $this->pusher->trigger(
$this->formatChannels($channels), $event, $payload, $socket, true
);
the problems are
1- $socket is set null instead of array,
2- laravel sets $already_encoded variable true, but sending data as array not json I don't understand why, the parameter is set as array but anyway send true to the function.
3- the function return just body instead of complete response

I'm avoiding to change the laravel PusherBroadcaster, so I changed the Pusher.php in order to correct that problems:

My workaround is like this:

1-
Line 496 of Pusher.php
changed from:
$data_encoded = $this->crypto->encrypt_payload($channels[0], $already_encoded ? $data : json_encode($data));
To:
$data_encoded = $this->crypto->encrypt_payload($channels[0], $already_encoded && !is_array( $data) ? $data : json_encode($data));

Line 499 of Pusher.php
changed from:
$data_encoded = $already_encoded ? $data : json_encode($data);
To:
$data_encoded = $already_encoded && !is_array( $data) ? $data : json_encode($data);

2-Line 518 of Pusher.php
changed from:
$all_params = array_merge($post_params, $params);
To:
$all_params = array_merge($post_params, is_array($params) ? $params:[]);

3- Line 542 of Pusher.php
changed from:
return $result;
To:
return $response;

using that it works for me, and Im getting messages on the browser:

[Koozza]

Guys, Are you using laravel 8.29.0? I've reported this a while back: laravel/framework#36339 and this was fixed in 8.29.0: laravel/framework#36344

Please note that if you're using laravel-websockets you need to use at least 1.10 (beyondcode/laravel-websockets#698)

[benw-pusher]

Thanks @Koozza.

This should be resolved in v8.29.0 of Laravel. I'll close this issue now.

[LuisMejiaPoot]

I fixed it with this
#278 (comment)

[acidjazz]

Why is this still closed? can we close this when it works in Laravel again?

[guptanishantmca]

If you got this error it means, your pusher package is not compatible with the current Laravel version. To avoid this error just install the right package then it will work fine. I got the same error and resolved by installing the right compatible package.