php设计模式之工厂模式的实例代码

<?php
/**
  *php设计模式 工厂模式
  *site http://www.jb200.com
*/
class FruitFactory {
 private $history, $class, $constructor_args;
 /**
  * Create a factory of given class. Accepts extra arguments to be passed to
  * class constructor.
 */
 function __construct( $class ) {
    var_dump($args = func_get_args());
 
   $this->class = $class;//类名
   $this->constructor_args = array_slice( $args, 1 );//参数
 }
 
 function __call( $method, $args ) {
   $this->history[] = array(
   'action' => 'call',
   'method' => $method,
   'args'    => $args
  );
   var_dump($this->history);
 }
 
 function __set( $property, $value ) {
  $this->history[] = array(
  'action' => 'set',
  'property' => $property,
  'value' => $value
  );
 var_dump($this->history);
 }
 
 /**
  * Creates an instance and performs all operations that were done on this MagicFactory
  */
 function instance() {
  # use Reflection to create a new instance, using the $args
  $reflection_object = new ReflectionClass( $this->class );
  $object = $reflection_object->newInstanceArgs( $this->constructor_args );
 
 
  foreach( $this->history as $item ) {
  if( $item['action'] == 'call' ) { 
     //运行实例的方法
     call_user_func_array( array( $object, $item['method'] ), $item['args'] );
  }//属性赋值
  if( $item['action'] == 'set' ) {
     $object->{$item['property']} = $item['value'];
  }
  }
 
  # Done
  return $object;
 }
 }
 
 class Fruit {
    private $name, $color;
    public $price;
 
 function __construct( $name, $color ) {
    $this->name = $name;
    $this->color = $color;
 }
 
 function setName( $name ) {
    $this->name = $name;
 }
 
 function introduce() {
    print "Hello, this is an {$this->name} {$this->color}, its price is {$this->price} RMB.";
 }
 }
 
 # Setup a factory
 $fruit_factory = new FruitFactory('Fruit', 'Apple', 'Gonn');
 $fruit_factory->setName('Apple');
 $fruit_factory->price = 2;
 
 # Get an instance
 $apple = $fruit_factory->instance();
 $apple->introduce();
 ?>