1. <?php
  3. class CollectionLimiter {
  5. private $limit;
  6. private $collection;
  8. public function __construct(int $limit, iterable $collection) {
  9. $this->limit = $limit;
  10. $this->collection = $collection;
  11. }
  13. public function getNext(): ?mixed {
  14. $count = 0;
  15. foreach ($this->collection as $item) {
  16. if ($count >= $this->limit) {
  17. return null; // Limit reached
  18. }
  19. $count++;
  20. }
  21. return $this->collection[$count - 1]; // Return remaining item
  22. }
  24. public function hasNext(): bool {
  25. $count = 0;
  26. foreach ($this->collection as $item) {
  27. if ($count >= $this->limit) {
  28. return false;
  29. }
  30. $count++;
  31. }
  32. return true;
  33. }
  35. public function reset(): void {
  36. // Reset the internal state. Important if the collection is reused.
  37. $this->collection = $this->collection; //re-assign the collection
  38. $this->limit = $this->limit;
  39. }
  40. }
  42. //Example Usage:
  43. /*
  44. $data = range(1, 10);
  45. $limiter = new CollectionLimiter(5, $data);
  47. foreach ($limiter as $item) {
  48. echo $item . " ";
  49. }
  50. echo "\n";
  52. $limiter->reset();
  54. foreach ($limiter as $item) {
  55. echo $item . " ";
  56. }
  57. echo "\n";
  58. */
  59. ?>

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