未从表格[重复]发送的硬编码GET值

Question

This question already has an answer here:

• Form action doesn't submit hard-coded variable 3 answers

In the action attribute of my form element I have specified some get values, which will be sent along with the value from the actual form. However the values I have hardcoded in are not sent to the new document, what am I doing wrong?

 <form action="loginForm.php?type=dept" method="get">
    <select name="dept" onchange="this.form.submit()">
      <option value="">Department</option>
      <option value="Bar">Bar</option>
      <option value="Cleaning">Cleaning</option>
      <option value="Kitchen">Kitchen</option>
      <option value="Management">Management</option>
      <option value="Maintenance">Maintenance</option>
      <option value="Waiting">Waiting</option>
    </select>
  </form>

At the top of the loginForm file is this code, which will output 'Type not set' every time

if(!isset($_GET['type']))
{
    echo 'Type not set';
}

</div>

Answer 1

This is because the get parameters you are "forcing" by putting them in the URL are "overwritten" when the page is submitted. You will need to use a hidden field like:

input type="hidden" name="type" value="valuehere" />

Adding this to your form will submit this additional value.