1. <?php
  3. /**
  4. * Enforces limits on HTTP response size and attempts fallback.
  5. *
  6. * @param string $data The data to be sent in the response.
  7. * @param int $maxSize The maximum size of the response in bytes.
  8. * @return string The HTTP response.
  9. */
  10. function enforceResponseLimits(string $data, int $maxSize): string
  11. {
  12. // Check if the data exceeds the maximum size.
  13. if (strlen($data) > $maxSize) {
  14. // Fallback: Return a partial response with a helpful message.
  15. $truncatedData = substr($data, 0, $maxSize);
  16. $response = json_encode(['error' => 'Response too large', 'message' => 'Data exceeds maximum allowed size.']); //Use JSON for clarity
  17. $response .= "\n"; // Add a newline for readability
  18. $response .= "truncatedData: " . $truncatedData;
  19. return $response;
  20. } else {
  21. // No truncation needed.
  22. return $data;
  23. }
  24. }
  26. // Example Usage (for testing):
  27. // Simulate a large dataset
  28. $largeData = str_repeat("A", 10000);
  30. // Set the maximum response size (e.g., 10000 characters)
  31. $maxResponseSize = 10000;
  33. // Enforce the limits
  34. $response = enforceResponseLimits($largeData, $maxResponseSize);
  36. // Output the response (for testing)
  37. header('Content-Type: application/json'); //Set content type. Important for API responses
  38. echo $response;
  41. ?>

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