How to programmatically add customers to Opencart database

admin

Administrator
Staff member
<ol>
<li>I wonder if there is a special opencart function to add/edit a
customer to Opencart database programmatically using php/html form
on front-end page (such as wordpress "wp_insert_post" function ) or
I have to write all my code PHP way (insert into DB_TABLE .....)</li>
<li>Also which opencart db table(s) is used to add customer
information with username and password</li>
</ol>