laravel_demo/app/Listeners/PremoderateComment.php

<?php

namespace App\Listeners;

use App\Events\CommentAdded;
use Illuminate\Contracts\Queue\ShouldQueue;
use Illuminate\Queue\InteractsWithQueue;

use App\Models\Comment;
use Illuminate\Support\Str;

class PremoderateComment implements ShouldQueue
{
    /**
     * Create the event listener.
     */
    public function __construct()
    {
        //
    }

    /**
     * Handle the event.
     */
	public function handle(CommentAdded $event): void
    {
        $comment = $event->comment;

        $result = Str::of($comment->content)->match('/(http:|https:)/');

        if ($result == "") {
			$comment->allow();
        } else {
			$comment->makePending();
        }
    }
}