In the provided PHP script, what could be a possible reason for the selected value from a dropdown list not being passed in the email form submission?

The possible reason for the selected value from a dropdown list not being passed in the email form submission could be that the name attribute of the dropdown list in the HTML form does not match the name attribute used in the PHP script to retrieve the selected value. To solve this issue, ensure that the name attribute in the HTML form matches the name attribute used in the PHP script.

// HTML form
<select name="dropdown_list">
  <option value="option1">Option 1</option>
  <option value="option2">Option 2</option>
</select>

// PHP script to retrieve the selected value
$selected_value = $_POST['dropdown_list'];