protected static function WebformCodeMirror::validateHtml in Webform 6.x

Same name and namespace in other branches

1. 8.5 src/Element/WebformCodeMirror.php \Drupal\webform\Element\WebformCodeMirror::validateHtml()

Validate HTML.

Parameters

array $element: The form element whose value is being validated.

\Drupal\Core\Form\FormStateInterface $form_state: The current state of the form.

array $complete_form: The complete form structure.

Return value

array|null An array of error messages.

1 call to WebformCodeMirror::validateHtml()

WebformCodeMirror::getErrors in src/Element/WebformCodeMirror.php

Get validation errors.

File

src/Element/WebformCodeMirror.php, line 253

Class

WebformCodeMirror

Provides a webform element for using CodeMirror.

Namespace

Drupal\webform\Element

Code

protected static function validateHtml($element, FormStateInterface $form_state, $complete_form) {

  // @see: http://stackoverflow.com/questions/3167074/which-function-in-php-validate-if-the-string-is-valid-html
  // @see: http://stackoverflow.com/questions/5030392/x-html-validator-in-php
  libxml_use_internal_errors(TRUE);
  if (simplexml_load_string('<fragment>' . $element['#value'] . '</fragment>')) {
    return NULL;
  }
  $errors = libxml_get_errors();
  libxml_clear_errors();
  if (!$errors) {
    return NULL;
  }
  $messages = [];
  foreach ($errors as $error) {
    $messages[] = $error->message;
  }
  return $messages;
}