Code to use interface to implement factory design pattern in php

Code to use interface to implement factory design pattern in php_PHP tutorial

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Release： 2016-07-21 15:18:26

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Interfaces in PHP can only play a role in defining constraint classes. Although not as intuitive as C#/Java, based on the encapsulation requirements of OOP, using interfaces can improve the scalability of the program, such as implementing the proxy design pattern.

Copy code The code is as follows:

 
//Human interface
interface IHuman 
{ 
function GetName(); 
} 
//Male human, implements human interface
class ManClass implements IHuman 
{ 
//Get name method
public function GetName () 
{ 
return "I'm man."."
"; 
} 
} 
//Female human, implements human interface
class WomanClass implements IHuman 
{ 
//Get name method
public function GetName() 
{ 
return "I'm Woman."."
"; 
} 
} 
//Class factory, produce different instance objects as needed and return 
class ManFactory 
{ 
//Get instance objects according to parameters
public function GetIHuman($IHuman="man") 
{ 
if($IHuman=="woman") 
{ 
return new WomanClass(); 
} 
else if($IHuman=="man") 
{ 
return new ManClass(); 
} 
else 
{ 
return null; 
} 
} 
//Get the woman class directly 
public function GetWoman() 
{ 
return new WomanClass(); 
//return new ManClass(); 
} 
//Get the man class directly
public function GetMan() 
{ 
return new ManClass(); 
} 
} 
$ManFactory=new ManFactory(); 
$ManClass=$ManFactory->GetIHuman(); 
echo $ManClass->GetName(); 
$IHuman=$ManFactory->GetIHuman("woman"); 
echo $IHuman->GetName(); 
$Woman=$ManFactory-> ;GetWoman(); 
echo $Woman->GetName(); 
$Man=$ManFactory->GetMan(); 
echo $Man->GetName(); 
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