1. <?php
  3. /**
  4. * Tracks request headers for debugging with limited memory.
  5. *
  6. * This function stores request headers in a simple array structure
  7. * and outputs them in a human-readable format. It's designed for
  8. * debugging purposes and avoids storing large amounts of data in memory.
  9. * Suitable for situations where a full log is not needed, but header
  10. * information is valuable.
  11. *
  12. * @param array $headers The array of HTTP headers.
  13. */
  14. function trackRequestHeaders(array $headers): void
  15. {
  16. // Use a simple array to store the headers.
  17. static $trackedHeaders = [];
  19. // Add the current headers to the tracked headers.
  20. $trackedHeaders = array_merge($trackedHeaders, $headers);
  23. // Output the tracked headers in a human-readable format.
  24. echo "--- Request Headers ---\n";
  25. foreach ($trackedHeaders as $headerName => $headerValue) {
  26. echo "$headerName: $headerValue\n";
  27. }
  28. echo "-----------------------\n";
  30. // Limit the number of tracked headers to prevent excessive memory usage.
  31. if (count($trackedHeaders) > 20) {
  32. $trackedHeaders = array_slice($trackedHeaders, 0, 20);
  33. }
  34. }
  36. /**
  37. * Example usage (for testing). Remove in production.
  38. */
  39. if (isset($_SERVER['REQUEST_METHOD']) && $_SERVER['REQUEST_METHOD'] === 'GET') {
  40. $headers = getallheaders(); // Get all request headers.
  41. trackRequestHeaders($headers);
  42. }
  46. ?>

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