1. <?php
  3. /**
  4. * Parses data from datasets with optional flags.
  5. *
  6. * @param string $dataset_path Path to the dataset file.
  7. * @param array $options An array of optional parameters.
  8. * - 'delimiter' : Delimiter used in the dataset (default: ',').
  9. * - 'header' : Whether the dataset has a header row (default: true).
  10. * - 'skip_rows' : Number of rows to skip at the beginning (default: 0).
  11. * - 'data_type' : Data type of the columns ('string', 'int', 'float'). Default: 'string'.
  12. *
  13. * @return array|false An array of data rows, or false on error.
  14. */
  15. function parseDataset(string $dataset_path, array $options = []): array|false
  16. {
  17. // Default options
  18. $delimiter = $options['delimiter'] ?? ',';
  19. $header = $options['header'] ?? true;
  20. $skip_rows = $options['skip_rows'] ?? 0;
  21. $data_type = $options['data_type'] ?? 'string';
  23. // Validate data type
  24. if (!in_array($data_type, ['string', 'int', 'float'])) {
  25. error_log("Invalid data_type. Must be string, int, or float.");
  26. return false;
  27. }
  29. $data = [];
  31. // Open the file
  32. if (($handle = fopen($dataset_path, 'r')) === false) {
  33. error_log("Could not open file: " . $dataset_path);
  34. return false;
  35. }
  37. // Skip header rows
  38. if ($header) {
  39. fgetcsv($handle, 0, $delimiter); // Skip header row
  40. }
  42. // Skip specified rows
  43. for ($i = 0; $i < $skip_rows; $i++) {
  44. fgetcsv($handle, 0, $delimiter);
  45. }
  47. // Read data rows
  48. while (($row = fgetcsv($handle, 0, $delimiter)) !== false) {
  49. // Convert data types
  50. $typed_row = [];
  51. foreach ($row as $value) {
  52. if ($data_type == 'int' && is_numeric($value)) {
  53. $typed_row[] = (int) $value;
  54. } elseif ($data_type == 'float' && is_numeric($value)) {
  55. $typed_row[] = (float) $value;
  56. } else {
  57. $typed_row[] = $value;
  58. }
  59. }
  60. $data[] = $typed_row;
  61. }
  63. fclose($handle);
  65. return $data;
  66. }
  68. ?>

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