Why PHP?

What does PHP stand for?

Personal HomepagePHP: Hypertext Preprocessor (recursive

acronym)Created by Rasmus Lerdorf (1994)

It’s FREE!!

PHP is open-source

Platform Independent

Can be deployed/installed in different OS

Great Documentation

php.netFunctions are well explained + informative

examples

Large and Active Community

stackoverflowphp.netgithubEtc...

Easy to learn

Simple syntaxWell documentedLots of tutorials

everywhereLots of premade libraries

WHY PHP

It’s FreePlatform IndependentGreat DocumentationLarge and Active CommunityEasy to learn

OBJECT ORIENTED PROGRAMMING

Object Oriented Programming

A programming concept that treats functions and data as objects.

A programming methodology based on objects, instead of functions and procedures.

“I explain that procedural program is built around the "verbs" of the system, the things you want the system to do, whereas object-oriented programming is build about the "nouns," the things in the system, and what they are capable of.”

Object and Class

CLASS

is a "template"/"blueprint" that is used to create objects

usually represents a noun, such as person, place or thing.

CLASS

class PointGuard{

}

OBJECT

In real world object is a material thing that can be seen and  touched.

In OOP, object is a self-contained entity that consist of both data and procedures.

An instance of a class

Give examples of real life class and object.

INSTANCE

INSTANCE

layman's term - a case or occurrence of anything

a single copy of an object, there might be one or several  objects, but an instance is a specific copy, to which you can have a reference

$instance = new PointGuard();

INHERITANCE

INHERITANCE

biology - the genetic characters transmitted from parents to offspring

OOP - provides reusability of codes. We can add additional codes to an existing class without modifying it.  

can be defined as the process of one object acquires the properties of another by making subclasses (parent-child relationship)

INHERITANCE

<?phpclass BasketballPosition{ // some methods and properties}

class PointGuard extends BasketballPosition{ // some methods and properties}

Give examples of inheritance.

Class Properties and Methods

HeightWeightPassDribbleShootReboundBlock

Class Properties

 also know as data members and is used to hold data of a class.

The data that it holds are specific to the nature of the class in which it has been defined.

Class Properties

class PointGuard{ public $name; public $ball_handling_level;}

Class Methods

functions that are associated with the classfunctions that can be involve in the class

property processing

Class Methods

class PointGuard{ public $name; public $ball_handling_level;

public function createPlay() { // some processing here }}

Encapsulation

Encapsulation

 facilitates the bundling of data with the methods (or other functions) operating on that data.

 restricting access to some of the object’s components.

used to hide the values or state of a structured data object inside a class, preventing unauthorized parties' direct access to them.

Encapsulation

Example :Courting a girl

Encapsulation

Access modifiers/Visibility private

property and method can be accessed only inside the class itself and can't be accessed anywhere else

protected property and method can be accessed only

inside the class itself and inside child classes. public

allows the property/method to be accessed from anywhere of code

Private

class Love{ private $hearbeat_per_second = 100;

public function getHeartBeatPerSec() { return $this->heartbeat_per_second; }}

class Valentines extends Love{ public function getHeartBeatPerSecWhenNear() { return $this->heartbeat_per_second * 2; // will produce an error }}

$love = new Love();echo $love->getHeartBeatPerSec(); // will output 100echo $love->heartbeat_per_second; // will produce an error

Protected

class Love{ protected $hearbeat_per_second = 100;

public function getHeartBeatPerSec() { return $this->heartbeat_per_second; }}

class Valentines extends Love{ public function getHeartBeatPerSecWhenNear() { return $this->heartbeat_per_second * 2; // will return 200 }}

$love = new Love();echo $love->getHeartBeatPerSec(); // will output 100echo $love->heartbeat_per_second; // will produce an error

Public

class Love{ public $hearbeat_per_second = 100;

public function getHeartBeatPerSec() { return $this->heartbeat_per_second; }}

class Valentines extends Love{ public function getHeartBeatPerSecWhenNear() { return $this->heartbeat_per_second * 2; // will return 200 }}

$love = new Love();echo $love->getHeartBeatPerSec(); // will output 100echo $love->heartbeat_per_second; // will output 100

Choosing the Right Visibility

START

Accessed externally?

publicY

Deny to children?

privateY

N

N

protected

PHP OOP

Object and ClassInstanceInheritanceClass Properties and MethodsEncapsulation

Introduction to Git and Github

Git whhaaat???

Is a source/version control management software.

Is a software that allows you to track the changes that you make to individual files.

git push

git pull

git commit

Github eeeeee??

 is a web-based hosting service for software development projects that use the Git revision control system

“social coding”

Why u no use git and github??

Why u no use git and github??

Git can track your changes to your projects.You can go back to a certain change you

made that you want to recover.

Why u no use git and github??

Why u no use git and github??

Github lets you collaborate with other developers or your project teammates by adding comments or suggestions on commits.

You can also contribute to public/open source projects. (eg. Facebook SDK, Codeigniter, PHP, etc...)

Share your codes to public and get feedback from large community of developers.

Why u no use git and github??

Why u no use git and github??

Commands Overview

git init Initializes a git repository.

git status Check your changes made (untracked files, modified files, staged

files) git commit

Save your changes into one commit history. git push

Push your changes in the remote repository. git pull

Pull changes from remote repository and apply it to your local repository.

git fetch Fetch changes from remote repository but changes will not apply

to your local repository

Git and Github

Git and github can be effectively used in project collaborations.

Can improve a developer’s coding.Can avoid overriding or duplicating codesNot just a developer tool

“Whenever you are asked if you can do a job, tell'em, Certainly, I can! Then get busy and find out how to do it.”

- Theodore Roosevelt