PHP Design Patterns PHP OO Interface Basics

//copyright Lawrence Truett and FluffyCat.com 2007, all rights reserved

  //this class "extends" OOPHPInterfaceOne and OOPHPInterfaceTwo.
  //Unlike abstracts, of which only one can be extended,
  //  a class can implement multiple interfaces.

  include_once('OOPHPInterfaceOne.php');
  include_once('OOPHPInterfaceTwo.php');
    
  class OOPHPClassToImplementInterfaces 
    implements OOPHPInterfaceOne, OOPHPInterfaceTwo {

    private $instanceNameOne;  
    
    //OOPHPInterfaceOne has the function getNameOne,
    //  so we must implement it here. 
    public function getNameOne() {
      return $this->instanceNameOne;
    }  

    //OOPHPInterfaceTwo has the function getNameTwo,
    //  so we must implement it here. 
    public function getNameTwo() {
      return $this->instanceNameTwo;
    }
    
    //OOPHPInterfaceOne has the function setNameOne,
    //  so we must implement it here. 
    public function setNameOne($nameIn) {
      $this->instanceNameOne = $nameIn;
    }

    //OOPHPInterfaceTwo has the function setNameTwo,
    //  so we must implement it here. 
    public function setNameTwo($nameIn) {
      $this->instanceNameTwo = $nameIn;
    }

  }

//copyright Lawrence Truett and FluffyCat.com 2007, all rights reserved

  //OOPHPInterfaceOne - a simple OO PHP Interface
  //  this defines two functions, getNameOne() and setNameOne($nameIn)
  //  which any class extending this must have
  
  interface OOPHPInterfaceOne {  
    
    function getNameOne();

    function setNameOne($nameIn);
    
  }

//copyright Lawrence Truett and FluffyCat.com 2007, all rights reserved

  //OOPHPInterfaceTwo - a simple OO PHP Interface
  //  this defines two functions, getNameTwo() and setNameTwo($nameIn)
  //  which any class extending this must have
  
  interface OOPHPInterfaceTwo {  
    
    function getNameTwo();

    function setNameTwo($nameIn);
    
  }

//copyright Lawrence Truett and FluffyCat.com 2007, all rights reserved

  include_once('OOPHPClassToImplementInterfaces.php');

  define('BR', '<'.'BR'.'>');

  echo 'BEGIN TESTING PHP INTERFACES'.BR;
  echo BR;
  
  echo 'test 1 - create a class which implements two interfaces'.BR;
  $classOne = new OOPHPClassToImplementInterfaces();
  echo BR;
  $classOne->setNameOne("Harold");
  echo 'Name One: '.$classOne->getNameOne();

  echo BR;
  $classOne->setNameTwo("Maude");
  echo 'Name Two: '.$classOne->getNameTwo();
  echo BR.BR;

  echo 'END TESTING PHP INTERFACES'.BR;

BEGIN TESTING PHP INTERFACES


test 1 - create a class which implements two interfaces


Name One: Harold
Name Two: Maude


END TESTING PHP INTERFACES