/**
 * Adding Fields to signup HERE!
 */
function THEME_signup_user_form($node) {
  global $user;
  $form = array();

  // If this function is providing any extra fields at all, the following
  // line is required for form form to work -- DO NOT EDIT OR REMOVE.
  $form['signup_form_data']['#tree'] = TRUE;

  $form['signup_form_data']['Name'] = array(
    '#type' => 'textfield',
    '#title' => t('Name'),
    '#size' => 40, '#maxlength' => 64,
    '#required' => TRUE,
  );
 $form['signup_form_data']['E-Mail'] = array(
    '#type' => 'textfield',
    '#title' => t('E-Mail'),
    '#size' => 40, '#maxlength' => 64,
    '#required' => TRUE,
  );
  $form['signup_form_data']['Phone'] = array(
    '#type' => 'textfield',
    '#title' => t('Phone'),
    '#size' => 40, '#maxlength' => 64,
  );

  // If the user is logged in, fill in their name by default.
  if ($user->uid) {
    $form['signup_form_data']['Name']['#default_value'] = $user->name;
    $form['signup_form_data']['E-Mail']['#default_value'] = $user->mail;
  }

  return $form;
}

/**
 * Returns the value to use for the user name for anonymous signups.
 *
 * WARNING: If you implemented your own version of THEME_signup_form_data()
 * that changed or removed the custom 'Name' field and your site
 * allows anonymous signups, you will need to modify this, too.
 *
 * This value is used for the %user_name email token for anonymous users, and
 * also to identify a particular anonymous signup in various places in the UI.
 *
 * @param $form_data
 *   Array of custom signup form values for the current signup.
 * @param $email
 *   E-mail address of the anonymous user who signed up.
 * @return
 *   A string with the proper value for the %user_name email token.
 *
 * @see THEME_signup_user_form()
 */
function THEME_signup_anonymous_username($form_data, $email) {
  // In some cases, the best you can do is to use the anonymous user's
  // supplied email address, in which case, you should uncomment this:
  //return $email;

  // WARNING: This line is only valid if you left the 'Name' field in
  // your site's version of THEME_signup_user_form().
  return $form_data['Name'];
}

Adding E-mail to -  function THEME_signup_user_form

Adding E-mail to -  function THEME_signup_user_form

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