1. <?php
  3. /**
  4. * Function to deserialize log stream data for staging environments.
  5. *
  6. * This function takes a string containing serialized data (e.g., from a log stream)
  7. * and attempts to decode it into a PHP array or object. Handles potential errors
  8. * gracefully, logging issues and returning an empty array on failure.
  9. *
  10. * @param string $serializedData The serialized data string.
  11. * @return array|null Decoded data as an array, or null on failure.
  12. */
  13. function deserializeLogStreamData(string $serializedData): ?array
  14. {
  15. // Remove any leading/trailing whitespace
  16. $serializedData = trim($serializedData);
  18. // Check if the data is empty or null
  19. if (empty($serializedData)) {
  20. // Return an empty array if the input is empty
  21. return [];
  22. }
  24. // Attempt to unserialize the data. Using `error_reporting` and `error_log`
  25. // for better error handling in staging environments.
  26. error_reporting(E_ALL | E_STRICT);
  27. ini_set('display_errors', 0); //Disable error display in production/staging
  28. error_log("Deserialization attempt: " . $serializedData); //Log the input data for debugging
  29. $data = unserialize($serializedData);
  32. // Check if unserialize was successful
  33. if ($data === false) {
  34. error_log("Deserialization failed: " . error_get_last()['message'] . " - Data: " . $serializedData);
  35. return []; // Return an empty array on failure
  36. }
  38. //Return the deserialized data
  39. return $data;
  40. }
  43. /**
  44. * Example Usage (for testing/demonstration)
  45. */
  46. /*
  47. $logData = '{"timestamp": "2024-10-27T10:00:00Z", "message": "Application started"}';
  48. $decodedData = deserializeLogStreamData($logData);
  50. if (!empty($decodedData)) {
  51. print_r($decodedData);
  52. } else {
  53. echo "Failed to deserialize log data.\n";
  54. }
  56. $invalidData = 'This is not valid JSON';
  57. $decodedData = deserializeLogStreamData($invalidData);
  59. if (!empty($decodedData)) {
  60. print_r($decodedData);
  61. } else {
  62. echo "Failed to deserialize log data.\n";
  63. }
  64. */
  67. ?>

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