Microsoft design pattern Theory is, “The document introduces patterns and then presents them in a repository, or catalogue, which is organized to help you locate the right combination of patterns that solves your problem”.

Examples of Design patterns

Singleton

A Class has one instance, It provides a global access point to it, Following code will explain about singleton concept.

<?php   class Singleton 
{      
public static function getInstance() 
{         
static $instance = null;                 
if (null === $instance)
{            
$instance = new static();      
}         
return $instance;      
}      
protected function __construct() 
{      
}            
private function __clone() 
{      
}            
private function __wakeup() 
{      
}   
}      
class SingletonChild extends Singleton 
{   
}      
$obj = Singleton::getInstance();  
var_dump($obj === Singleton::getInstance());      
$anotherObj = SingletonChild::getInstance();   
var_dump($anotherObj === Singleton::getInstance());  
var_dump($anotherObj === SingletonChild::getInstance()); 
?>

Above Example implemented based on static method creation is getInstance()

Factory

A Class Simple Creates the object and you want to use that object, Following example will explain about factory design pattern.

<?php   class Automobile 
{      
private $bikeMake;      
private $bikeModel;            
public function __construct($make, $model) 
{         
$this->bikeMake = $make;         
$this->bikeModel = $model;      
}            
public function getMakeAndModel() 
{         
return $this->bikeMake . ' ' . $this->bikeModel;      
}   
}    
class AutomobileFactory 
{     
public static function create($make, $model) 
{         
return new Automobile($make, $model);      
}   
}      
$pulsar = AutomobileFactory::create('ktm', 'Pulsar');   
print_r($pulsar->getMakeAndModel());     
class Automobile 
{      
private $bikeMake;      
private $bikeModel;            
public function __construct($make, $model) 
{         $this->bikeMake = $make;         
$this->bikeModel = $model;      
}            
public function getMakeAndModel() 
{         
return $this->bikeMake . ' ' . $this->bikeModel;     
}   
}      
class AutomobileFactory 
{     
public static function create($make, $model) 
{         
return new Automobile($make, $model);     
}   
}   
t$pulsar = AutomobileFactory::create('ktm', 'pulsar');      
print_r($pulsar->getMakeAndModel()); 
?>

The main difficulty with factory pattern is it will increase the complexity and it is not reliable for good programmers.

Strategy pattern

Strategy pattern makes a family algorithm and encapsulates each algorithm. Here each algorithm should be inter-changeable within the family.

<?php   $elements = array( array('id' => 2, 'date' => '2011-01-01',),array('id' => 1, 'date' => '2011-02-01'));
$collection = new ObjectCollection($elements);      
$collection->setComparator(new IdComparator());   
$collection->sort();      
echo "Sorted by ID:\n";   
print_r($collection->elements);      
$collection->setComparator(new DateComparator());  
$collection->sort();      
echo "Sorted by date:\n";   
print_r($collection->elements);
?>

Model View Control

The View acts as GUI, Model Acts as Back End and Control acts as an adapter. Here three parts are interconnected with each other. It will pass the data and access the data between each other.

php 7

Core PHP vs Frame Works PHP

We assume that Core PHP means solving a Mathematical problem by using paper and pen. Frame work means solving Mathematical problem by using a calculator.

Core PHP-Solving Mathematical Problem

Only some students can achieve results by using paper and pen as same as in PHP. Only a few of the developers can write the code in an easy way and reliable format.

Framework – Solving Mathematical problem

Everyone can achieve the result by using the calculator as same as in PHP. Even beginners can write the code in easy way and reliable format.

The main problem with core PHP is when developers write own logic, it is difficult to make it out for the result so most of the developers are choosing innovative frameworks.

Frame Work

Most of the frameworks are reliability, consistence and time saver. Some of the innovative frameworks are having the rich set of functionalities, so developer no need to write whole code, Developers needs to access the code by using framework and develop a PHP web application. Frameworks don’t give the solutions for bad code writers, but it gives reliability while writing code.

Enhance Projects

Everyone wants to move into sophisticated technologies. If any website or web applications have developed in Core PHP, it is difficult to enhance the website components, but if website or web applications has developed in Frame Work PHP, it is very easy to enhance the features.

Has Core PHP Been BAD?

It’s not at all bad. Core PHP helps you write the code and understand the code. when the developer at begin stage, we strongly recommended to learn Core PHP, because we don’t want to see you as a bad developer. According to World theory, easy always gives best result with strong base. As per the world theory, if you know core PHP, you would reach your goal by using framework PHP.

So, this brings us to the end of blog. This Tecklearn ‘Design Patters in PHP’ blog helps you with commonly asked questions if you are looking out for a job in PHP Programming. If you wish to learn Java and build a career Java Programming domain, then check out our interactive, Java and JEE Training, that comes with 24*7 support to guide you throughout your learning period. Please find the link for course details:

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Need for servlets
Servlet fundamentals
Setting up a web project in Eclipse
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Servlet lifecycle
Servlets Continued
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Hibernate features
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