I have a php variable $valuable='bottomValue'
and a select drop down inside a form which upon submit returns to the same page
<form action='' method='post'>
<select>
<option value='topValue'>One</option>
<option value='midValue'>Two</option>
<option value='bottomValue'>Three</option>
</select>
<input name='theSubmit' type='submit' />
</form>
Based upon the value of the $valuable how can I change the selected option to match.
For example on page load because the default value of the variable = 'bottomValue' option three would be selected