1. <?php
  3. /**
  4. * Exports string results for testing with fallback logic.
  5. *
  6. * @param array $results An array of string results.
  7. * @param string $filename The name of the file to export to.
  8. * @param array $fallback_methods An array of fallback methods to try.
  9. * @return bool True on success, false on failure.
  10. */
  11. function exportStringResults(array $results, string $filename, array $fallback_methods = []): bool
  12. {
  13. try {
  14. // Attempt to write the results to the specified file.
  15. $success = file_put_contents($filename, json_encode($results));
  17. if ($success !== false) {
  18. return true; // Success
  19. } else {
  20. // File write failed, attempt fallback methods.
  21. foreach ($fallback_methods as $method) {
  22. $success = $method($filename, $results);
  23. if ($success !== false) {
  24. return true; // Success with fallback
  25. }
  26. }
  27. return false; // Failed with all fallback methods.
  28. }
  29. } catch (Exception $e) {
  30. // Handle any exceptions during file operations.
  31. if(empty($fallback_methods)){
  32. return false; //No fallback methods available
  33. }
  34. foreach ($fallback_methods as $method) {
  35. $success = $method($filename, $results);
  36. if ($success !== false) {
  37. return true; // Success with fallback
  38. }
  39. }
  40. return false; // Failed with all fallback methods.
  41. }
  42. }
  44. /**
  45. * Example fallback method: Writes results to a CSV file.
  46. *
  47. * @param string $filename The name of the file to write to.
  48. * @param array $results The results to write.
  49. * @return bool True on success, false on failure.
  50. */
  51. function exportStringResultsCsv(string $filename, array $results): bool
  52. {
  53. $csv_string = fopen($filename, 'w');
  54. if ($csv_string === false) {
  55. return false;
  56. }
  58. foreach ($results as $result) {
  59. fputcsv($csv_string, [$result]);
  60. }
  62. fclose($csv_string);
  63. return true;
  64. }
  66. /**
  67. * Example fallback method: Outputs to the console.
  68. *
  69. * @param string $filename The name of the file to write to.
  70. * @param array $results The results to write.
  71. * @return bool True on success, false on failure.
  72. */
  73. function exportStringResultsConsole(string $filename, array $results): bool
  74. {
  75. echo json_encode($results) . PHP_EOL;
  76. return true;
  77. }
  79. // Example Usage:
  80. $results = ['result1', 'result2', 'result3'];
  81. $filename = 'results.json';
  82. $fallback_methods = [exportStringResultsCsv, exportStringResultsConsole];
  84. if (exportStringResults($results, $filename, $fallback_methods)) {
  85. echo "Results exported successfully!\n";
  86. } else {
  87. echo "Failed to export results.\n";
  88. }
  90. ?>

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