Laravel level 0 (introduction)

Laravel Level 0
The Introduction to Laravel
By Spicydog (31-10-2016)

Agenda
● Lecturer introduce
● PHP in Brief
○ PHP Basic (Variable, Controls, Function)
○ PHP Intermediate (OOP)
● Web Application Development World
○ CMS (Content Management System)
○ Application Frameworks
● Introduction to Laravel
○ What is Laravel?
○ Why Laravel?
○ Prerequisites
● Development Environment
● Workshop & Assignments

● Simply a full stack developer since high school
● Graduated MS from CPE@KMUTT
● Do research but still love application developments
● Dev everything from web to Android to iOS
● Feel free to discuss with me, I love knowledge sharing!
Hello! it’s me, Spicydog!

● Established in 1995
● Zend Technologies and PHP communities
● Most popular version: 5.6
● Most recent version: 7.1 (recommend 7.0)
● PHP is a SCRIPT Language
● Designed for web development (I am good at string things)
● Almost dominate the internet,
supported by most hosting,
has so many CMS and frameworks
PHP is everywhere and now here!

Let’s Rock with PHP Variable
$ for variable
$a = “1” // string(1) "1"
$b = ’1’ // string(1) "1"
$c = 1 // int(1)
$d = 1.0 // float(1)
var_dump() for variable information
var_dump($a+$b); // int(2)
var_dump($a.$b); // string(2) "11"
var_dump($a+$c); // int(2)
var_dump($c.$d); // string(2) "11"
var_dump($c+$d); // float(2)
So becareful!
PHP is dynamic type, it works most of the times but it always.
You must cast types with intval(), floatval(), and friends.. sometimes

'string' and "string" are NOT the same!
$a = 1;
$b = 2;
$c = 3;
echo '$a
$b
$c
';
echo '$an$bn$cn';
echo "$a
$b
$c
";
echo "$an$bn$cn";
$a
$b
$c
$an$bn$cn1
2
3
1
2
3

Controls in PHP are similar to C and Java
If..Else
if ($a) {}
else {}
For
for($i=0; $i<10; $i++;) {}
While
$i=0; while($i<10) {$i++;}
Do..While
$i=0; do{$i++;} while($i<10);
Switch
switch ($i) {
case 0: break;
default: break;
}

Functions in PHP are also similar to C and Java
function name($param1, $param2) {
return $param1 . $param2;
}
name(‘1’,’2’); // string(2) "12"

Class in PHP <?php
class Foo
{
public static $my_static = 'foo';
public function staticValue() {
return self::$my_static;
}
}
class Bar extends Foo
{
public function fooStatic() {
return parent::$my_static;
}
}
print Foo::$my_static . "n";
$foo = new Foo();
print $foo->staticValue() . "n";
print $foo->my_static . "n"; // Undefined "Property" my_static
print $foo::$my_static . "n";
$classname = 'Foo';
print $classname::$my_static . "n"; // As of PHP 5.3.0
print Bar::$my_static . "n";
$bar = new Bar();
print $bar->fooStatic() . "n";
?>
self for static
$this for object
:: call to static
-> call to object
http://php.net/manual/en/language.oop5.static.php

Web Application Development World

In web application development world, we..
Do it easy
Do it quick
Do it simple
Do it readable
Do it secure
Do it extendable
We try to use less money and time to have things done!

So we go for CMS and Frameworks
● CMS (Content Management System)
○ A web application for content management
○ Install and ready to go!
○ Work on most simple tasks
○ Not very flexible
● Application Framework
○ A template for application development
○ Pattern the code
○ Avoid reinvent the wheel
○ Easy and dev on top and flexible for most tasks
○ Require programming skills

Laravel, a super productive PHP framework
● Laravel first launched in 2011
● Current version is 5.3
● Developed on top of Symfony
● Aims: fun, productive, clean, extendable
● Relatively bad in performance (but not that bad!)

Why Laravel?
● Easy to learn! (hopefully)
● Full of tools, ready for dev, tons of libraries
● We want our application to finish as fast as possible
● We want to work least
● We want our application easy to develop
● Our application is not user intensive
● Save time, save money, and done more things!
Say all of these in one word..
PRODUCTIVITY

But wait!! You have to know..
PHP Basic
PHP with DBMS
PHP OOP
PHP CLI
MVC
Composer
Artisan CLI
OMG

Don’t Worry!
I’m here to help you out :)

PHP CLI
CLI stands for Command Line Interface
Similar to Command Prompt and whatever Shell but this is PHP
Try this on your terminal! php -a
Are you using Windows? Good luck, help yourself! GOOGLE

Model-View-Controller
A primitive flow for software development
Client (Request) => Controller (Logic) => Model (Data Logic) =>
Controller (Login Again) => View (Display) => Client (Response)
Partitioning codes
by its functionality
Easy to maintain
This is a must-known
thing in any
software development
http://www.tutorialized.com/tutorial/Fundamentals-of-an-MVC-Framework/81946

Composer
The most popular dependency management tool in PHP
Get any libraries by typing in CLI
For example,
Install Laravel, we simply enter:
composer create-project --prefer-dist laravel/laravel blog
Add library to laravel we do:
composer require "laravelcollective/html":"^5.2.0"
Q: Where did I get these commands?
A: Google it man, they are on the website
https://getcomposer.org

Artisan CLI
Artisan is a PHP CLI Tool help you manage Laravel components
Simply go to Laravel root directory and type: php artisan
We are going to talk about this later since we are going to use it a lot!

Make sure you can run..
php from your command line
Otherwise, install PHP (we use PHP 5.6+)
composer from your command line
Otherwise, install Composer
Web Server on your computer
Recommend Apache for Rookie
You can use XAMPP for Windows or MAMP for Mac or LAMP for Linux
PHP IDE
I recommend PhpStorm, use your student status to claim a license
Git
We use Git here, you can use SourceTree if you want GUI client

Coding Style
In Laravel, we follow
PSR-2 Coding Style
Please follow this style =>
<?php
namespace VendorPackage;
use FooInterface;
use BarClass as Bar;
use OtherVendorOtherPackageBazClass;
class Foo extends Bar implements FooInterface
{
public function sampleMethod($a, $b = null)
{
if ($a === $b) {
bar();
} elseif ($a > $b) {
$foo->bar($arg1);
} else {
BazClass::bar($arg2, $arg3);
}
}
final public static function bar()
{
// method body
}
}

ROCK n’ LOAD
The most valuable skill is the skill to learn new things,
so here is your works have to make it done before next time
- Install development environment I have talked in last section
- Install your first Laravel Application
- Have a look at Directory Structure
- Try whatever you want
Extra!
- Wanna in advance? Go watch to Laracasts
- Free public cloud you can get from AWS Free Tier
Or claim free DigitalOcean credit from Github Student

Woo hoo!
No more slides, let’s rock!

Laravel level 0 (introduction)

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