The Value Attribute in Selects in PHP

Let's specify the value attribute for the list items:

html<form action="" method="GET">
  <select name="test">
    <option value="1">item1</option>
    <option value="2">item2</option>
    <option value="3">item3</option>
  </select>
  <input type="submit">
</form>

In this case, the value of this attribute will be sent to the server:

html<?php
  var_dump($_GET['test']); // '1', '2' or '3'
?>