1. <?php
  3. /**
  4. * Truncates file contents for validation checks with graceful failure.
  5. *
  6. * @param string $filePath Path to the file.
  7. * @param int $maxLength Maximum length of the data to extract.
  8. * @param string $errorTitle Title for the error message.
  9. * @param string $errorDescription Description of the error.
  10. * @return string|false Truncated data or false on failure.
  11. */
  12. function truncateFileContent(string $filePath, int $maxLength, string $errorTitle, string $errorDescription): string|false
  13. {
  14. if (!file_exists($filePath)) {
  15. error_log("File not found: " . $filePath); // Log the error
  16. return false;
  17. }
  19. $fileContent = file_get_contents($filePath);
  21. if ($fileContent === false) {
  22. error_log("Failed to read file: " . $filePath); // Log the error
  23. return false;
  24. }
  26. if (strlen($fileContent) <= $maxLength) {
  27. return $fileContent; // Return the original content if already within limit
  28. }
  30. $truncatedContent = substr($fileContent, 0, $maxLength); // Truncate the data
  31. return $truncatedContent;
  32. }
  34. // Example Usage (for testing):
  35. // $filePath = 'data.txt'; // Replace with your file path
  36. // $maxLength = 100;
  37. // $truncatedData = truncateFileContent($filePath, $maxLength, 'Truncation Error', 'File is larger than the maximum allowed length.');
  39. // if ($truncatedData === false) {
  40. // echo "Error: " . $errorTitle . " - " . $errorDescription . "\n";
  41. // } else {
  42. // echo "Truncated data:\n" . $truncatedData . "\n";
  43. // }
  46. ?>

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