function extlink_admin_settings_validate in External Links 7

Same name and namespace in other branches

1. 6 extlink.module \extlink_admin_settings_validate()

Validation handler for admin settings form.

File

./extlink.module, line 273

External Link module.

Code

function extlink_admin_settings_validate($form, &$form_state) {

  // Check if the exclude pattern is a valid regular expression.
  if ($exclude = $form_state['values']['extlink_exclude']) {

    // Testing the regex via replace.
    $regexeval = @preg_replace('/' . $exclude . '/', '', 'Lorem ipsum');

    // If the regex returns NULL, then throw an error and reset the variable.
    if ($regexeval === NULL) {
      form_set_error('extlink_exclude', t('Invalid regular expression.'));
      variable_set('extlink_exclude', '');
    }
  }

  // Check if the include pattern is a valid regular expression.
  if ($include = $form_state['values']['extlink_include']) {

    // Testing the regex via replace.
    $regexeval = @preg_replace('/' . $include . '/', '', 'Lorem ipsum');

    // If the regex returns NULL, then throw an error and reset the variable.
    if ($regexeval === NULL) {
      form_set_error('extlink_include', t('Invalid regular expression.'));
      variable_set('extlink_include', '');
    }
  }
}