Gender Update (Radio Button) Using PHP Mysqli

<div class="form-group">
                  <label for="exampleInputEmail1">Gender</label><br/>
                                      <input type="radio" name="att_user_gender" value="Male"<?php if($row['att_user_gender']=="Male"){ echo "checked";}?> />Male &nbsp;&nbsp;
                    <input type="radio" name="att_user_gender"  value="Female" <?php if($row['att_user_gender']=="Female"){ echo "checked";}?>/>Female
                </div>