How to implement change email in php without using javascript?

Question

PHP

Guys I'm trying to add user editing functionality, namely the ability to change the user's email.

The problem is that when checking for an existing user, I give an error "that the user already exists." but if I edit the same user with the same email, then the same error occurs when updating other user fields.

Answer 1

I decided to implement the mail change functionality separately from the user editing form.