1. <?php
  3. /**
  4. * Instruments date values for validation with retry logic.
  5. *
  6. * @param callable $callback The function that accepts a date value
  7. * and returns true if valid, false otherwise.
  8. * @param int $maxRetries Maximum number of retry attempts.
  9. * @param int $retryDelay Delay in seconds between retries.
  10. * @param int $initialDelay Delay in seconds before the first retry.
  11. * @return bool True if the date value is valid after retries, false otherwise.
  12. */
  13. function validateDateWithRetry(callable $callback, int $maxRetries, int $retryDelay = 5, int $initialDelay = 2): bool
  14. {
  15. $retries = 0;
  16. $delay = $initialDelay;
  18. while ($retries < $maxRetries) {
  19. try {
  20. if ($callback(date_default_timezone_set('UTC'), new DateTime())) { //Run validation logic
  21. return true; // Date is valid
  22. } else {
  23. $retries++;
  24. if ($retries < $maxRetries) {
  25. sleep($delay); // Wait before retrying
  26. $delay += $retryDelay; // Increase delay for subsequent retries
  27. }
  28. }
  29. } catch (Exception $e) {
  30. $retries++;
  31. if ($retries < $maxRetries) {
  32. sleep($delay);
  33. $delay += $retryDelay;
  34. }
  35. }
  36. }
  38. return false; // Date validation failed after all retries
  39. }
  41. //Example usage:
  42. /**
  43. * Dummy validation function, replace with your actual validation logic.
  44. * @param DateTime $date
  45. * @return bool
  46. */
  47. function isValidDate(DateTime $date): bool
  48. {
  49. //Replace with your date validation conditions.
  50. return true;
  51. }
  52. ?>

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