1. <?php
  3. /**
  4. * Parses configuration file arguments with defensive checks.
  5. *
  6. * @param array $args An array of command-line arguments.
  7. * @param array $defaultValues An array of default configuration values.
  8. * @return array An associative array representing the parsed configuration.
  9. * @throws InvalidArgumentException If an argument is missing or invalid.
  10. */
  11. function parseConfig(array $args, array $defaultValues): array
  12. {
  13. $config = $defaultValues;
  15. foreach ($args as $key => $value) {
  16. if (array_key_exists($key, $defaultValues)) {
  17. $defaultValue = $defaultValues[$key];
  19. // Defensive check: Ensure the value is not null or empty
  20. if ($value !== null && $value !== '') {
  21. $config[$key] = $value;
  22. }
  23. // else, keep the default value
  24. } else {
  25. // Argument not found
  26. throw new InvalidArgumentException("Missing configuration argument: " . $key);
  27. }
  28. }
  30. return $config;
  31. }
  33. /**
  34. * Example Usage - Demonstrate error handling and validation.
  35. */
  36. try {
  37. $arguments = ['--port' => '8080', '--debug' => 'true', '--log-file' => '/var/log/app.log'];
  38. $defaults = [
  39. 'port' => 80,
  40. 'debug' => false,
  41. 'log-file' => null,
  42. 'timeout' => 10,
  43. ];
  45. $config = parseConfig($arguments, $defaults);
  47. echo "<pre>";
  48. print_r($config);
  49. echo "</pre>";
  51. } catch (InvalidArgumentException $e) {
  52. echo "Error: " . $e->getMessage();
  53. }
  56. /**
  57. * Example Usage - Demonstrate missing argument handling.
  58. */
  59. try {
  60. $arguments = ['--port' => '8080']; //Missing debug
  61. $defaults = [
  62. 'port' => 80,
  63. 'debug' => false,
  64. ];
  66. $config = parseConfig($arguments, $defaults);
  68. echo "<pre>";
  69. print_r($config);
  70. echo "</pre>";
  72. } catch (InvalidArgumentException $e) {
  73. echo "Error: " . $e->getMessage();
  74. }
  77. ?>

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