use Illuminate\Support\Str;
 
// Basic usage
$text = "Welcome to Laravel";
$result = Str::doesntContain($text, 'PHP'); // true
// Multiple checks
$result = Str::doesntContain($text, ['PHP', 'Laravel']); // false

<?php
 
namespace App\Services;
 
use App\Models\Message;
use Illuminate\Support\Str;
 
class MessageFilter
{
    protected array $sensitiveTerms = [
        'confidential',
        'internal',
        'classified'
    ];
 
    public function isSafeForPublic(Message $message): bool
    {
        return Str::doesntContain(
            strtolower($message->content),
            $this->sensitiveTerms
        );
    }
 
    public function processMessage(Message $message): array
    {
        if ($this->isSafeForPublic($message)) {
            $message->update(['status' => 'published']);
            return ['status' => 'success', 'message' => 'Message published'];
        }
        $message->update(['status' => 'review_required']);
 
        return ['status' => 'pending', 'message' => 'Content needs review'];
    }
}