1. <?php
  3. /**
  4. * Decodes input strings for dry-run scenarios with optional flags.
  5. *
  6. * @param string $input The input string to decode.
  7. * @param array $flags An array of optional flags. Defaults to an empty array.
  8. * @return array|string The decoded data or an error message.
  9. */
  10. function decodeInput(string $input, array $flags = []): array|string
  11. {
  12. $decoded = [];
  14. // Handle flags
  15. foreach ($flags as $flag => $value) {
  16. if ($flag === 'debug') {
  17. $decoded['debug'] = $value;
  18. } elseif ($flag === 'verbose') {
  19. $decoded['verbose'] = $value;
  20. } else {
  21. return "Error: Unknown flag '$flag'"; // Invalid flag
  22. }
  23. }
  25. // Decode the input string
  26. if (empty($input)) {
  27. return "Error: Input string is empty.";
  28. }
  30. // Simple example: split by comma and then split each element by a pipe
  31. $parts = explode(',', $input);
  33. foreach ($parts as $part) {
  34. $pipe_parts = explode('|', trim($part)); // Trim whitespace
  36. if (count($pipe_parts) === 2) {
  37. $decoded[$pipe_parts[0]] = $pipe_parts[1];
  38. } elseif (count($pipe_parts) === 1) {
  39. $decoded[$pipe_parts[0]] = ''; //Handle single element
  40. } else {
  41. return "Error: Invalid input format. Expected format: key|value or key";
  42. }
  43. }
  45. return $decoded;
  46. }
  48. //Example Usage
  49. //echo decodeInput("key1|value1,key2|value2", ['debug' => true]);
  50. //echo decodeInput("key1|value1,key2|value2", []);
  51. //echo decodeInput("", []);
  52. //echo decodeInput("key1,key2", ['verbose' => true]);
  53. //echo decodeInput("key1|value1|extra", []);
  54. ?>

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