1. <?php
  3. /**
  4. * Decodes and validates a record input for hypothesis validation.
  5. *
  6. * @param string $record_string The input record as a string.
  7. * @param array $expected_fields An array of expected field names.
  8. * @return array|null An associative array representing the decoded record if valid, null otherwise.
  9. */
  10. function decode_and_validate_record(string $record_string, array $expected_fields): ?array
  11. {
  12. // Decode the record string (assuming CSV format for simplicity).
  13. $record_data = str_getcsv($record_string);
  15. // Check if the record data is empty.
  16. if (empty($record_data)) {
  17. error_log("Invalid record: Empty record.");
  18. return null;
  19. }
  21. // Sanity checks: Check number of fields against expected fields.
  22. if (count($record_data) !== count($expected_fields)) {
  23. error_log("Invalid record: Incorrect number of fields.");
  24. return null;
  25. }
  27. // Create an associative array to store the decoded record.
  28. $decoded_record = [];
  30. // Loop through the expected fields and assign values from the record data.
  31. for ($i = 0; $i < count($expected_fields); $i++) {
  32. $field_name = trim($expected_fields[$i]); //Trim whitespace
  33. if (empty($field_name)) {
  34. error_log("Invalid record: Empty field name.");
  35. return null;
  36. }
  38. $decoded_record[$field_name] = trim($record_data[$i]); //Trim whitespace
  39. }
  41. // Add more specific validation logic here if needed.
  42. // For example, data type validation, range checks, etc.
  44. return $decoded_record;
  45. }
  47. //Example usage:
  48. /*
  49. $record_string = "id,name,age,city";
  50. $expected_fields = ["id", "name", "age", "city"];
  52. $record = decode_and_validate_record($record_string, $expected_fields);
  54. if ($record) {
  55. print_r($record);
  56. } else {
  57. echo "Record validation failed.";
  58. }
  59. */
  61. ?>

Add your comment