1. <?php
  3. /**
  4. * Task Queue Manager for CLI Arguments.
  5. * Supports older PHP versions (5.3+).
  6. */
  7. class TaskQueueManager
  8. {
  9. private $tasks = [];
  11. /**
  12. * Adds a task to the queue.
  13. * @param callable $task The callable (function) to execute.
  14. * @param array $args Arguments to pass to the task.
  15. */
  16. public function enqueue(callable $task, array $args = []): void
  17. {
  18. $this->tasks[] = [
  19. 'task' => $task,
  20. 'args' => $args,
  21. ];
  22. }
  24. /**
  25. * Processes tasks from the queue.
  26. * @return void
  27. */
  28. public function process(): void
  29. {
  30. while (!empty($this->tasks)) {
  31. $task = array_shift($this->tasks); // Get the next task.
  32. $task_type = $task['task'];
  33. $args = $task['args'];
  35. try {
  36. if (is_callable($task_type)) {
  37. $task_type($args); // Execute the task.
  38. } else {
  39. throw new Exception("Invalid task type: " . gettype($task_type));
  40. }
  41. } catch (Exception $e) {
  42. echo "Error executing task: " . $e->getMessage() . PHP_EOL;
  43. }
  44. }
  45. }
  46. }
  48. // Example usage (for testing):
  49. if (PHP_SAPI === 'cli') {
  50. $queueManager = new TaskQueueManager();
  52. // Define some example tasks
  53. function task1(array $args) {
  54. echo "Task 1 executed with arguments: " . implode(", ", $args) . PHP_EOL;
  55. }
  57. function task2(array $args) {
  58. echo "Task 2 executed with arguments: " . implode(", ", $args) . PHP_EOL;
  59. }
  61. // Enqueue tasks
  62. $queueManager->enqueue('task1', ['arg1', 'arg2']);
  63. $queueManager->enqueue('task2', ['arg3']);
  64. $queueManager->enqueue('task1', ['arg4', 'arg5']);
  67. // Process the queue
  68. $queueManager->process();
  69. }
  72. ?>

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