1. <?php
  3. /**
  4. * Mirrors data from a log file for validation checks.
  5. *
  6. * @param string $logFilePath Path to the log file.
  7. * @param string $mirrorFilePath Path to the destination file for the mirrored data.
  8. * @return bool True on success, false on failure.
  9. */
  10. function mirrorLogFile(string $logFilePath, string $mirrorFilePath): bool
  11. {
  12. // Check if the log file exists
  13. if (!file_exists($logFilePath)) {
  14. error_log("Log file not found: " . $logFilePath);
  15. return false;
  16. }
  18. // Open the log file for reading
  19. $logFileHandle = fopen($logFilePath, "r");
  20. if (!$logFileHandle) {
  21. error_log("Failed to open log file: " . $logFilePath);
  22. return false;
  23. }
  25. // Open the mirror file for writing
  26. $mirrorFileHandle = fopen($mirrorFilePath, "w");
  27. if (!$mirrorFileHandle) {
  28. error_log("Failed to open mirror file: " . $mirrorFilePath);
  29. fclose($logFileHandle); // Close the log file if mirror file fails to open
  30. return false;
  31. }
  33. try {
  34. // Read the log file line by line
  35. while (($line = fgets($logFileHandle)) !== false) {
  36. // Write each line to the mirror file
  37. fwrite($mirrorFileHandle, $line);
  38. }
  39. } catch (Exception $e) {
  40. error_log("Error reading/writing log file: " . $e->getMessage());
  41. fclose($logFileHandle);
  42. fclose($mirrorFileHandle);
  43. return false;
  44. }
  46. // Close both files
  47. fclose($logFileHandle);
  48. fclose($mirrorFileHandle);
  50. return true;
  51. }
  53. //Example Usage:
  54. //Define the paths to the log file and the mirror file.
  55. $logFile = "my_log.txt";
  56. $mirrorFile = "mirrored_log.txt";
  58. //Call the function.
  59. if (mirrorLogFile($logFile, $mirrorFile)) {
  60. echo "Log file mirrored successfully to " . $mirrorFile . "\n";
  61. } else {
  62. echo "Log file mirroring failed.\n";
  63. }
  65. ?>

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