1. <?php
  3. /**
  4. * Validates response headers configuration for development environment.
  5. * Gracefully handles failures.
  6. *
  7. * @param array $expectedHeaders Array of expected headers and their values.
  8. * @return bool True if all headers are valid, false otherwise.
  9. */
  10. function validateResponseHeaders(array $expectedHeaders): bool
  11. {
  12. $responseHeaders = getallheaders(); // Get current response headers.
  14. foreach ($expectedHeaders as $headerName => $expectedValue) {
  15. if (isset($responseHeaders[$headerName])) {
  16. if ($responseHeaders[$headerName] !== $expectedValue) {
  17. error_log("Invalid header: " . $headerName . ". Expected: " . $expectedValue . ", Got: " . $responseHeaders[$headerName]);
  18. return false; // Header validation failed.
  19. }
  20. } else {
  21. error_log("Missing header: " . $headerName);
  22. return false; // Header is missing.
  23. }
  24. }
  26. return true; // All headers are valid.
  27. }
  30. /**
  31. * Example usage (development only).
  32. */
  33. if (isset($_SERVER['PHP_VERSION'])) { //Check PHP version
  34. if (version_compare($_SERVER['PHP_VERSION'], '7.0', '>=')) {
  35. // Example expected headers for development (adjust as needed).
  36. $expectedHeaders = [
  37. 'X-Powered-By' => 'PHP/7.4',
  38. 'Content-Type' => 'application/json',
  39. 'Access-Control-Allow-Origin' => '*',
  40. ];
  42. if (validateResponseHeaders($expectedHeaders)) {
  43. error_log("Response headers are valid.");
  44. } else {
  45. error_log("Response headers are invalid. Check configuration.");
  46. }
  47. } else {
  48. error_log("This script requires PHP 7.0 or higher.");
  49. }
  50. }
  52. ?>

Add your comment