How can the issue of the default "Please select" option appearing in a dropdown list be addressed when submitting a form in PHP?

The issue of the default "Please select" option appearing in a dropdown list can be addressed by setting the default value of the dropdown list to an empty string. This way, when the form is submitted, the empty string will be sent instead of the default "Please select" option.

<select name="dropdown">
    <option value="">Please select</option>
    <option value="option1">Option 1</option>
    <option value="option2">Option 2</option>
</select>