[0:05] hello and welcome to the second section
[0:07] of the learn php the right way course
[0:09] in the first section of the course we
[0:11] covered the core concepts of php like
[0:13] data types casting control structures
[0:15] functions and so on though most of the
[0:17] things that we did in the first section
[0:19] of the course we did it using the
[0:20] procedural php
[0:22] it is time to move on to object-oriented
[0:24] php in procedural programming an
[0:26] application or a program is divided into
[0:29] a set of functions that operate on some
[0:31] sort of data that are stored in
[0:32] variables
[0:33] so you basically have some sort of
[0:35] global state or variables
[0:36] and then bunch of functions that work
[0:38] with those variables
[0:40] you could also have functions called
[0:41] other functions and so on in
[0:43] object-oriented programming however
[0:45] you're basically combining or bundling
[0:47] related functions and variables into
[0:49] something called a class
[0:51] from which you create objects you could
[0:53] access variables and call functions of
[0:55] the object if they are publicly
[0:56] available we refer
[0:58] to the variables of the object or the
[0:59] class as properties
[1:01] and the functions as methods i mentioned
[1:03] a class so what exactly is a class and
[1:05] what's the difference between a class
[1:07] and an object
[1:08] in simple terms basically a class is a
[1:10] blueprint and an object is something
[1:12] that you create or build from that
[1:14] blueprint you could have many objects of
[1:16] the same class but each of those
[1:18] objects can be different let's take a
[1:19] house as an example the blueprint of the
[1:22] house would be your class
[1:23] and the house itself would be the object
[1:26] you could have multiple houses based on
[1:28] the same blueprint with slight
[1:29] differences they can have different
[1:31] paint colors they can have different
[1:33] layouts and so on
[1:34] in other words objects are simply
[1:36] instances of the classes the main
[1:38] advantage of object oriented programming
[1:40] is the ability to structure your code in
[1:42] a better way that is easier to maintain
[1:45] test extend debug and so on though this
[1:47] does not mean that procedural
[1:49] programming is useless
[1:50] there are some use cases for procedural
[1:53] programming it might
[1:54] be a good pick for a small project that
[1:56] does not require many features or much
[1:58] maintenance and you're the only one
[2:00] working on it or maybe it's a simple
[2:01] transcript
[2:02] basically not everything has to be
[2:04] object oriented but as your code grows
[2:06] and your project requirements increase
[2:08] you will find yourself in a trap where
[2:10] modifying extending and maintaining that
[2:12] code becomes difficult
[2:14] especially when you're working in teams
[2:16] this is where object-oriented
[2:17] programming can help you but do note
[2:19] that object-oriented programming does
[2:21] not mean your code will automatically be
[2:23] easier to maintain
[2:24] essentially it is up to you as a
[2:26] developer to ensure that you write your
[2:29] code in a way that is maintainable
[2:30] extendable readable and reusable
[2:32] object-oriented programming just makes
[2:34] it easier for you to
[2:36] write such code also object-oriented
[2:38] programming is on demand
[2:39] meaning that you won't find many
[2:41] companies looking for programmers with
[2:43] experience in just procedural
[2:44] programming most of them require
[2:46] object-oriented programming skills thus
[2:48] object-oriented programming mean
[2:50] mvc no and this is the misconception
[2:52] that i see a lot an object-oriented php
[2:55] does not
[2:56] automatically imply mvc object-oriented
[2:58] programming is a programming paradigm
[3:00] while mvc is an architectural pattern of
[3:03] modal
[3:04] view controller which uses the
[3:06] object-oriented programming principles
[3:08] and we'll talk about this more later in
[3:09] the course but basically
[3:11] object-oriented programming does not
[3:13] imply mpc
[3:14] object-oriented programming has four
[3:16] main principles and these are
[3:18] encapsulation abstraction inheritance
[3:20] and polymorphism and we'll cover these
[3:22] principles in detail in separate videos
[3:24] so don't worry about them right now
[3:26] let's talk a little bit about what you
[3:28] can expect and learn from this section
[3:30] of the course
[3:30] in this section of the course we'll
[3:32] cover how to create classes and objects
[3:34] what are magic methods and go over the
[3:36] use cases and examples
[3:38] we'll cover code style and psr standards
[3:40] namespaces autoloading and dependency
[3:42] management we'll cover all four
[3:44] principles of object-oriented
[3:46] programming in more detail with actual
[3:48] examples and of course we'll cover
[3:50] things like
[3:50] traits statics super global sessions
[3:53] cookies connecting to databases and much
[3:55] more and don't forget there is also a
[3:57] third section of the course which will
[3:58] cover much more advanced
[4:00] topics so this is it for this video let
[4:02] me know in the comments if you have any
[4:03] questions or feedback
[4:04] if you're looking forward to learning
[4:06] more about php please give this video a
[4:08] thumbs up which by the way helps a lot
[4:10] with youtube's algorithm
[4:11] share and subscribe and i'll see you on
[4:13] the next video where we'll get php
[4:14] installed using docker and start
[4:16] exploring object-oriented php more