<form method="post" action="edit_user_by_admin.php" class="form" id="change_user_by_admin">
<div class="row">
<div class="col-xs-12 col-sm-6 col-md-4">
<div class="form-group">
<label>E-mail:</label>
<?php
printf(
' <input type="email" class="form-control input-lg" name="email_change" value="%s" />
<input type = "hidden" value="%s" name="id_user">
',$_POST['email'],$_POST['id']);
?>
</div>
<div class="form-group">
<select name ='role' class="form-control input-lg">
<option value="select">Выбрать</option>
<option value ="user">Пользователь</option>
<option value ="admin">Администратор</option>
</select>
</div>
<div class="form-group">
<label>Пароль:</label>
<input type="password" class="form-control input-lg" name="pass_change" />
</div>
<div class="input-submit">
<input type="submit" class="btn btn-success" value="Сохранить изменения" name="submit" onclick='saveChange()' />
</div>
</div>
</div>
</form>