Next, add the following line to the form.php file:

The dropdown field will be named “option_name”. Next, create a file called functions.php and add the following code:

‘form-horizontal’, ‘fields’ => array( ‘dropdown_field’ ), ); // add the dropdown field to the post content area $form[‘the_content’] = array( ‘textarea’ => $dropdown_field, ); }

The add_dropdown() function will create a dropdown field, add it to the form, and add it to the post content area. The function will also assign the name “option_name” to the dropdown field.

Finally, the function will return.