1. <?php
  3. /**
  4. * Handles potential failures when processing a binary file.
  5. *
  6. * @param string $filePath Path to the binary file.
  7. * @return bool True on success, false on failure.
  8. */
  9. function processBinaryFile(string $filePath): bool
  10. {
  11. // Defensive check: File exists
  12. if (!file_exists($filePath)) {
  13. error_log("Error: File not found: $filePath");
  14. return false;
  15. }
  17. // Defensive check: File is readable
  18. if (!is_readable($filePath)) {
  19. error_log("Error: File not readable: $filePath");
  20. return false;
  21. }
  23. // Defensive check: File is a regular file (not a directory, etc.)
  24. if (!is_file($filePath)) {
  25. error_log("Error: $filePath is not a regular file.");
  26. return false;
  27. }
  30. try {
  31. // Attempt to read the file
  32. $fileContent = file_get_contents($filePath);
  34. if ($fileContent === false) {
  35. error_log("Error: Failed to read file content from: $filePath");
  36. return false;
  37. }
  39. // Simulate some processing of the binary data
  40. // Replace this with your actual processing logic
  41. // For example, you might want to validate the file's structure
  42. // with a specific binary format.
  44. // In this example, we just echo the first 100 bytes.
  45. $first100Bytes = substr($fileContent, 0, 100);
  47. // You can add more validation here. e.g. check magic number.
  48. //if (!validateBinaryFormat($first100Bytes)) {
  49. // error_log("Error: Invalid binary format in $filePath");
  50. // return false;
  51. //}
  54. // If processing is successful, return true
  55. return true;
  57. } catch (Exception $e) {
  58. //Catch any general exceptions
  59. error_log("Exception processing file $filePath: " . $e->getMessage());
  60. return false;
  61. }
  62. }
  64. //Example Usage:
  65. $filePath = 'my_binary_file.dat';
  67. if (processBinaryFile($filePath)) {
  68. echo "Binary file processed successfully.\n";
  69. } else {
  70. echo "Binary file processing failed.\n";
  71. }
  72. ?>

Add your comment