1. <?php
  3. /**
  4. * Verifies the integrity of queues for backward compatibility.
  5. *
  6. * This function checks if the queue data conforms to expected structures
  7. * and formats, providing simple error messages if discrepancies are found.
  8. *
  9. * @param array $queue The queue data to validate.
  10. * @return bool True if the queue is valid, false otherwise.
  11. */
  12. function verifyQueueIntegrity(array $queue): bool
  13. {
  14. // Check if the queue is an array.
  15. if (!is_array($queue)) {
  16. error_log("Error: Queue data must be an array."); //Log the error.
  17. return false;
  18. }
  20. // Check if the queue contains only strings.
  21. foreach ($queue as $item) {
  22. if (!is_string($item)) {
  23. error_log("Error: Queue items must be strings."); //Log the error.
  24. return false;
  25. }
  26. }
  28. // Check if all queue items are not empty.
  29. foreach ($queue as $item) {
  30. if (empty($item)) {
  31. error_log("Error: Queue items cannot be empty."); //Log the error.
  32. return false;
  33. }
  34. }
  36. // Optionally, check for a maximum queue size. (Example)
  37. if (count($queue) > 100) {
  38. error_log("Warning: Queue exceeds maximum size (100 items)."); //Log the warning.
  39. }
  41. return true; // Queue is valid.
  42. }
  44. // Example usage:
  45. /*
  46. $validQueue = ["item1", "item2", "item3"];
  47. $invalidQueue = [123, "item2", ""];
  49. if (verifyQueueIntegrity($validQueue)) {
  50. echo "Queue is valid.\n";
  51. } else {
  52. echo "Queue is invalid.\n";
  53. }
  55. if (verifyQueueIntegrity($invalidQueue)) {
  56. echo "Queue is valid.\n";
  57. } else {
  58. echo "Queue is invalid.\n";
  59. }
  60. */
  62. ?>

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