How change image name according id field in php

Question

i have register form include id,name,Lname,email,images in database.

i want change image name that uesrs upload according id and then upload and insert into database with php.

user image name:324fg.jpg convert according id field name:12.jpg

12 is number of id user in database.

Answer 1

$sql = "UPDATE userImage SET imageName='324fg.jpg' WHERE id=12";