PHP send mail to multiple email addresses

Question

What code I should do change in this PHP script to send one email to more than 20 email addresses?

Answer 1

Programmatically sending an submitted form to multiple email address is a possible thing, however the best practice for this is by creating a mailing list. On the code the list address will be place and any change or update on email addresses to the recipients list can be done without changing in the code.