1. <?php
  3. /**
  4. * Decodes HTML input for routine automation.
  5. *
  6. * @param string $html_input The HTML string to decode.
  7. * @return string|string[] Returns the decoded HTML string on success, or an array of error messages on failure.
  8. */
  9. function decodeHtml(string $html_input): string|string[]
  10. {
  11. // Use strip_tags to remove HTML tags from the input.
  12. $decoded_html = strip_tags($html_input);
  14. // Check if the input was successfully decoded.
  15. if (empty($decoded_html)) {
  16. return ['Error: No content found after decoding.'];
  17. }
  19. return $decoded_html;
  20. }
  22. // Example usage (for testing):
  23. if ($_SERVER["REQUEST_METHOD"] == "POST") {
  24. $html_input = $_POST["html_input"] ?? '';
  26. $result = decodeHtml($html_input);
  28. if (is_array($result)) {
  29. // Display error messages
  30. echo "<div style='color:red;'>";
  31. foreach ($result as $error) {
  32. echo htmlspecialchars($error) . "<br>"; //Escape for safety
  33. }
  34. echo "</div>";
  35. } else {
  36. // Display decoded HTML
  37. echo "<div style='margin-top: 20px;'>";
  38. echo "<pre>" . htmlspecialchars($result) . "</pre>"; //Escape for safety and preserve formatting
  39. echo "</div>";
  40. }
  41. }
  42. ?>
  44. <!DOCTYPE html>
  45. <html>
  46. <head>
  47. <title>HTML Decoder</title>
  48. </head>
  49. <body>
  51. <form method="post">
  52. <label for="html_input">Enter HTML:</label><br>
  53. <textarea id="html_input" name="html_input" rows="10" cols="50"></textarea><br><br>
  54. <input type="submit" value="Decode">
  55. </form>
  57. </body>
  58. </html>

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