1. <?php
  3. /**
  4. * Cleans data from a file, removing potentially harmful characters and formatting.
  5. *
  6. * @param string $filePath The path to the file to clean.
  7. * @return string|false The cleaned data as a string, or false on error.
  8. */
  9. function cleanFileData(string $filePath): string|false
  10. {
  11. if (!file_exists($filePath)) {
  12. error_log("File not found: $filePath");
  13. return false;
  14. }
  16. $fileContent = file_get_contents($filePath);
  18. if ($fileContent === false) {
  19. error_log("Failed to read file: $filePath");
  20. return false;
  21. }
  23. // Remove HTML tags
  24. $fileContent = strip_tags($fileContent);
  26. // Remove Javascript
  27. $fileContent = preg_replace('/<script.*?>.*?<\/script>/s', '', $fileContent);
  29. // Remove CSS
  30. $fileContent = preg_replace('/<style.*?>.*?<\/style>/s', '', $fileContent);
  32. // Remove comments
  33. $fileContent = preg_replace('/<!--.*?-->/', '', $fileContent);
  35. // Remove potentially harmful characters (e.g., backticks, single quotes)
  36. $fileContent = str_replace(["`", "'"], "", $fileContent);
  38. // Remove extra whitespace
  39. $fileContent = trim(preg_replace('/\s+/', ' ', $fileContent));
  41. // Optionally, handle specific characters if needed. Example: Remove control characters.
  42. $fileContent = preg_replace('/[\x00-\x1F\x7F]/', '', $fileContent);
  44. return $fileContent;
  45. }
  47. // Example usage:
  48. //$cleanedData = cleanFileData('path/to/your/file.txt');
  50. //if ($cleanedData !== false) {
  51. // echo $cleanedData;
  52. //} else {
  53. // echo "Error cleaning file.";
  54. //}
  56. ?>

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