1. <?php
  3. /**
  4. * Hashes array values for routine automation with basic input validation.
  5. *
  6. * @param array $data The array of values to hash.
  7. * @param string $hash_algorithm The hashing algorithm to use (e.g., 'sha256', 'md5'). Defaults to 'sha256'.
  8. * @return array An array containing the original values and their corresponding hashes, or an error message if validation fails.
  9. */
  10. function hashArrayValues(array $data, string $hash_algorithm = 'sha256'): array
  11. {
  12. // Input validation: Check if the input is an array
  13. if (!is_array($data)) {
  14. return ['error' => 'Invalid input: Input must be an array.'];
  15. }
  17. // Input validation: Check if the hashing algorithm is supported
  18. $supported_algorithms = ['sha256', 'md5', 'sha1']; //Add more as needed
  19. if (!in_array($hash_algorithm, $supported_algorithms)) {
  20. return ['error' => 'Invalid hashing algorithm. Supported algorithms: ' . implode(', ', $supported_algorithms)];
  21. }
  23. $hashed_data = [];
  25. foreach ($data as $value) {
  26. //Input validation: Check if the value is a string
  27. if (!is_string($value)) {
  28. return ['error' => 'Invalid input: All values in the array must be strings.'];
  29. }
  31. $hash = hash($hash_algorithm, $value); // Hash the value using the specified algorithm
  32. $hashed_data[$value] = $hash; // Store the original value and its hash
  33. }
  35. return $hashed_data;
  36. }
  38. //Example Usage
  39. // $my_array = ['value1', 'value2', 'value3'];
  40. // $hashed_array = hashArrayValues($my_array, 'sha256');
  41. // print_r($hashed_array);
  43. ?>

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