Codeigniter form_open specify id

Question

How can I write the form ID in the form_open function in CodeIgniter? (I need to use the ID for the CSS). For example, this is simple HTML:

<form method="post" action="" id="my_form">

I am trying the following code, but it does not work:

<?php echo form_open('my_form'); ?>

Thanks.

Answer 1

https://codeigniter.com/user_guide/helpers/form_helper.html

$attributes = array('id' => 'myform');
echo form_open('email/send', $attributes);