1. <?php
  3. /**
  4. * Splits a binary file into chunks with retry logic.
  5. *
  6. * @param string $filePath Path to the binary file.
  7. * @param int $chunkSize Size of each chunk in bytes.
  8. * @param int $retries Number of retry attempts.
  9. * @return array Array of chunk data, or false on failure.
  10. */
  11. function splitBinaryFile(string $filePath, int $chunkSize, int $retries = 3): array|false
  12. {
  13. $fileLength = filesize($filePath);
  14. if ($fileLength <= 0) {
  15. return false; // File is empty or doesn't exist
  16. }
  18. $chunks = [];
  19. $start = 0;
  21. for ($i = 0; $i < $fileLength; $i += $chunkSize) {
  22. $end = min($start + $chunkSize, $fileLength);
  24. $chunk = file_get_contents($filePath, $start, $end - $start);
  26. if ($chunk === false) {
  27. $retries--;
  28. if ($retries > 0) {
  29. error_log("Failed to read chunk. Retrying... (attempt: $retries)");
  30. usleep(100000); // Wait 100ms before retrying
  31. continue;
  32. } else {
  33. error_log("Failed to read chunk after multiple retries.");
  34. return false; // Return false if all retries fail
  35. }
  36. }
  38. $chunks[] = $chunk;
  39. $start = $end;
  40. }
  42. return $chunks;
  43. }
  45. // Example usage:
  46. // $filePath = 'path/to/your/binary_file.bin';
  47. // $chunkSize = 1024 * 1024; // 1MB chunks
  48. // $chunks = splitBinaryFile($filePath, $chunkSize);
  50. // if ($chunks !== false) {
  51. // echo "File split into " . count($chunks) . " chunks.\n";
  52. // // Process the chunks here
  53. // foreach ($chunks as $index => $chunk) {
  54. // echo "Chunk " . ($index + 1) . " size: " . strlen($chunk) . "\n";
  55. // // Do something with $chunk
  56. // }
  57. // } else {
  58. // echo "Failed to split the file.\n";
  59. // }
  61. ?>

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