PHP OOP Tutorial Section 2 - Intro to Object Oriented Programming - Full PHP 8 Tutorial

[00:05] hello and welcome to the second section

[00:07] of the learn php the right way course

[00:09] in the first section of the course we

[00:11] covered the core concepts of php like

[00:13] data types casting control structures

[00:15] functions and so on though most of the

[00:17] things that we did in the first section

[00:19] of the course we did it using the

[00:20] procedural php

[00:22] it is time to move on to object-oriented

[00:24] php in procedural programming an

[00:26] application or a program is divided into

[00:29] a set of functions that operate on some

[00:31] sort of data that are stored in

[00:32] variables

[00:33] so you basically have some sort of

[00:35] global state or variables

[00:36] and then bunch of functions that work

[00:38] with those variables

[00:40] you could also have functions called

[00:41] other functions and so on in

[00:43] object-oriented programming however

[00:45] you're basically combining or bundling

[00:47] related functions and variables into

[00:49] something called a class

[00:51] from which you create objects you could

[00:53] access variables and call functions of

[00:55] the object if they are publicly

[00:56] available we refer

[00:58] to the variables of the object or the

[00:59] class as properties

[01:01] and the functions as methods i mentioned

[01:03] a class so what exactly is a class and

[01:05] what's the difference between a class

[01:07] and an object

[01:08] in simple terms basically a class is a

[01:10] blueprint and an object is something

[01:12] that you create or build from that

[01:14] blueprint you could have many objects of

[01:16] the same class but each of those

[01:18] objects can be different let's take a

[01:19] house as an example the blueprint of the

[01:22] house would be your class

[01:23] and the house itself would be the object

[01:26] you could have multiple houses based on

[01:28] the same blueprint with slight

[01:29] differences they can have different

[01:31] paint colors they can have different

[01:33] layouts and so on

[01:34] in other words objects are simply

[01:36] instances of the classes the main

[01:38] advantage of object oriented programming

[01:40] is the ability to structure your code in

[01:42] a better way that is easier to maintain

[01:45] test extend debug and so on though this

[01:47] does not mean that procedural

[01:49] programming is useless

[01:50] there are some use cases for procedural

[01:53] programming it might

[01:54] be a good pick for a small project that

[01:56] does not require many features or much

[01:58] maintenance and you're the only one

[02:00] working on it or maybe it's a simple

[02:01] transcript

[02:02] basically not everything has to be

[02:04] object oriented but as your code grows

[02:06] and your project requirements increase

[02:08] you will find yourself in a trap where

[02:10] modifying extending and maintaining that

[02:12] code becomes difficult

[02:14] especially when you're working in teams

[02:16] this is where object-oriented

[02:17] programming can help you but do note

[02:19] that object-oriented programming does

[02:21] not mean your code will automatically be

[02:23] easier to maintain

[02:24] essentially it is up to you as a

[02:26] developer to ensure that you write your

[02:29] code in a way that is maintainable

[02:30] extendable readable and reusable

[02:32] object-oriented programming just makes

[02:34] it easier for you to

[02:36] write such code also object-oriented

[02:38] programming is on demand

[02:39] meaning that you won't find many

[02:41] companies looking for programmers with

[02:43] experience in just procedural

[02:44] programming most of them require

[02:46] object-oriented programming skills thus

[02:48] object-oriented programming mean

[02:50] mvc no and this is the misconception

[02:52] that i see a lot an object-oriented php

[02:55] does not

[02:56] automatically imply mvc object-oriented

[02:58] programming is a programming paradigm

[03:00] while mvc is an architectural pattern of

[03:03] modal

[03:04] view controller which uses the

[03:06] object-oriented programming principles

[03:08] and we'll talk about this more later in

[03:09] the course but basically

[03:11] object-oriented programming does not

[03:13] imply mpc

[03:14] object-oriented programming has four

[03:16] main principles and these are

[03:18] encapsulation abstraction inheritance

[03:20] and polymorphism and we'll cover these

[03:22] principles in detail in separate videos

[03:24] so don't worry about them right now

[03:26] let's talk a little bit about what you

[03:28] can expect and learn from this section

[03:30] of the course

[03:30] in this section of the course we'll

[03:32] cover how to create classes and objects

[03:34] what are magic methods and go over the

[03:36] use cases and examples

[03:38] we'll cover code style and psr standards

[03:40] namespaces autoloading and dependency

[03:42] management we'll cover all four

[03:44] principles of object-oriented

[03:46] programming in more detail with actual

[03:48] examples and of course we'll cover

[03:50] things like

[03:50] traits statics super global sessions

[03:53] cookies connecting to databases and much

[03:55] more and don't forget there is also a

[03:57] third section of the course which will

[03:58] cover much more advanced

[04:00] topics so this is it for this video let

[04:02] me know in the comments if you have any

[04:03] questions or feedback

[04:04] if you're looking forward to learning

[04:06] more about php please give this video a

[04:08] thumbs up which by the way helps a lot

[04:10] with youtube's algorithm

[04:11] share and subscribe and i'll see you on

[04:13] the next video where we'll get php

[04:14] installed using docker and start

[04:16] exploring object-oriented php more