1. <?php
  3. /**
  4. * Indexes and validates data from web forms.
  5. *
  6. * @param array $post_data Array of form data submitted via POST.
  7. * @return array|false Returns an array of validated data, or false on error.
  8. */
  9. function indexAndValidateForm(array $post_data): array|false
  10. {
  11. $validated_data = [];
  13. // Basic validation and indexing
  14. if (isset($post_data['name'])) {
  15. $validated_data['name'] = trim($post_data['name']); // Remove whitespace
  16. if (empty($validated_data['name'])) {
  17. error_log("Error: Name field is required."); // Log error
  18. return false;
  19. }
  20. }
  22. if (isset($post_data['email'])) {
  23. $email = trim($post_data['email']);
  24. if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
  25. error_log("Error: Invalid email format."); // Log error
  26. return false;
  27. }
  28. $validated_data['email'] = $email;
  29. }
  31. if (isset($post_data['age'])) {
  32. $age = filter_var($post_data['age'], FILTER_VALIDATE_INT);
  33. if ($age === false || $age < 0 || $age > 120) {
  34. error_log("Error: Invalid age."); // Log error
  35. return false;
  36. }
  37. $validated_data['age'] = $age;
  38. }
  40. if (isset($post_data['message'])) {
  41. $validated_data['message'] = trim($post_data['message']);
  42. }
  44. return $validated_data;
  45. }
  47. // Example usage (for testing)
  48. if ($_SERVER["REQUEST_METHOD"] == "POST") {
  49. $form_data = $_POST;
  50. $validated_data = indexAndValidateForm($form_data);
  52. if ($validated_data !== false) {
  53. print_r($validated_data); // Output validated data
  54. } else {
  55. echo "Form submission failed. See server logs for details.";
  56. }
  57. }
  59. ?>

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