There are some posts about this matter, but I didn't clearly get when to use object-oriented coding and when to use programmatic functions in an include. Somebody also mentioned to me that OOP is very heavy to run, and makes more workload. Is this right?
Let's say I have a big file with 50 functions. Why will I want to call these in a class? And not by function_name()? Should I switch and create an object which holds all of my functions? What will be the advantage or specific difference? What benefits does it bring to code OOP in PHP? Modularity?