PHP Background Jobs

Lightweight background job queue with file-based driver.

Requirements

• PHP 8.2+

Installation

composer require philiprehberger/php-background-jobs

Usage

Define a Job

Implement the Job interface:

use PhilipRehberger\BackgroundJobs\Contracts\Job;

class SendEmailJob implements Job
{
    public function __construct(
        private readonly string $to,
        private readonly string $subject,
    ) {}

    public function handle(): void
    {
        // Send the email...
    }
}

Create a Queue

Use the built-in FileDriver to store jobs as JSON files:

use PhilipRehberger\BackgroundJobs\Drivers\FileDriver;
use PhilipRehberger\BackgroundJobs\Queue;

$driver = new FileDriver('/path/to/storage/queue');
$queue = new Queue($driver);

Push Jobs

// Push a job for immediate processing
$id = $queue->push(new SendEmailJob('user@example.com', 'Welcome!'));

// Push a job with a delay (in seconds)
$id = $queue->later(new SendEmailJob('user@example.com', 'Reminder'), 3600);

Process Jobs with the Worker

use PhilipRehberger\BackgroundJobs\Worker;

// Process the next available job
$processed = Worker::processNext($queue);

// Process with a custom max attempts limit
$processed = Worker::processNext($queue, maxAttempts: 5);

Queue Management

// Get the number of pending jobs
$count = $queue->size();

// Clear all jobs
$queue->clear();

// Pop a job manually
$payload = $queue->pop();
if ($payload !== null) {
    $job = $payload->resolveJob();
    $job->handle();
}

Custom Queue Driver

Implement the QueueDriver interface to use a different storage backend:

use PhilipRehberger\BackgroundJobs\Contracts\QueueDriver;
use PhilipRehberger\BackgroundJobs\JobPayload;

class RedisDriver implements QueueDriver
{
    public function push(JobPayload $payload): void { /* ... */ }
    public function pop(): ?JobPayload { /* ... */ }
    public function size(): int { /* ... */ }
    public function clear(): void { /* ... */ }
}

Lifecycle Hooks

Register callbacks that fire when a job succeeds or fails:

use PhilipRehberger\BackgroundJobs\BaseJob;

class SendEmailJob extends BaseJob
{
    public function __construct(
        private readonly string $to,
    ) {}

    public function handle(): void
    {
        // Send the email...
    }
}

$job = new SendEmailJob('user@example.com');

$job->onSuccess(function ($job) {
    echo "Job completed after {$job->getAttempts()} attempt(s).";
});

$job->onFailure(function ($job, \Throwable $e) {
    echo "Job failed: {$e->getMessage()}";
});

$queue->push($job);

Error Handling

Failed jobs throw a JobFailedException:

use PhilipRehberger\BackgroundJobs\Exceptions\JobFailedException;

try {
    Worker::processNext($queue);
} catch (JobFailedException $e) {
    echo $e->getMessage();
    echo $e->payload->id;        // Job ID
    echo $e->payload->jobClass;  // Original job class
    echo $e->payload->attempts;  // Number of attempts
}

API

Class	Method	Description
Queue	push(Job $job): string	Push a job, returns job ID
Queue	later(Job $job, int $delaySeconds): string	Push a delayed job
Queue	pop(): ?JobPayload	Pop the next available job
Queue	size(): int	Get pending job count
Queue	clear(): void	Remove all jobs
Queue	pending(): array	Get all pending job payloads
Worker	processNext(Queue $queue, int $maxAttempts = 3): bool	Process next job
BaseJob	onSuccess(callable $callback): self	Register a success lifecycle hook
BaseJob	onFailure(callable $callback): self	Register a failure lifecycle hook
BaseJob	getAttempts(): int	Get the number of attempts
JobPayload	resolveJob(): Job	Deserialize the job instance
JobPayload	isAvailable(): bool	Check if job is ready to process
JobPayload	withIncrementedAttempts(): self	Clone with incremented attempts
JobPayload	toArray(): array	Serialize to array
JobPayload	fromArray(array $data): self	Restore from array

Development

composer install
vendor/bin/phpunit
vendor/bin/pint --test
vendor/bin/phpstan analyse

Support

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License

MIT