1. <?php
  3. /**
  4. * Strips metadata from user records in a legacy project.
  5. *
  6. * This function iterates through a collection of user records
  7. * and removes specified metadata fields. It's designed to be
  8. * compatible with older PHP versions.
  9. *
  10. * @param array $users An array of user records. Each record is an associative array.
  11. * @param array $metadata_to_remove An array of metadata field names to remove.
  12. * @return array The modified array of user records with metadata stripped.
  13. */
  14. function stripUserMetadata(array $users, array $metadata_to_remove): array
  15. {
  16. if (empty($users) || empty($metadata_to_remove)) {
  17. return $users; // Nothing to do.
  18. }
  20. foreach ($users as $user) {
  21. foreach ($metadata_to_remove as $field) {
  22. if (array_key_exists($field, $user)) {
  23. unset($user[$field]); // Remove the metadata field.
  24. }
  25. }
  26. }
  28. return $users;
  29. }
  31. // Example usage (replace with your actual user data and metadata)
  32. $users = [
  33. [
  34. 'id' => 1,
  35. 'username' => 'john_doe',
  36. 'email' => 'john.doe@example.com',
  37. 'created_at' => '2023-10-26',
  38. 'profile_picture' => 'profile.jpg',
  39. 'location' => 'New York',
  40. 'metadata_field_1' => 'some_value',
  41. 'metadata_field_2' => 'another_value'
  42. ],
  43. [
  44. 'id' => 2,
  45. 'username' => 'jane_doe',
  46. 'email' => 'jane.doe@example.com',
  47. 'created_at' => '2023-10-27',
  48. 'profile_picture' => 'profile.png',
  49. 'location' => 'London',
  50. 'metadata_field_1' => 'different_value',
  51. 'metadata_field_2' => 'yet_another_value'
  52. ]
  53. ];
  55. $metadata_to_remove = ['metadata_field_1', 'metadata_field_2'];
  57. $stripped_users = stripUserMetadata($users, $metadata_to_remove);
  59. // Output the stripped user data (for demonstration)
  60. print_r($stripped_users);
  62. ?>

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