Is it acceptable to use a mix of object oriented style with procedural style in coding PHP?

Question

So before I always used to use procedural style to code php, such as:

mysqli_connect

or

mysqli_prepare

An

Answer 1

Using both will not break your code and technically "ok", but consider future maintenance of the application by you or someone else. It's a lot easier to read the code if it's consistent and clean and you will save a lot of time later by picking and sticking to one now (preferably OOP).