php设计模式 Builder(建造者模式)

复制代码 代码如下: 
/** 
* 建造者模式 
* 
* 将一个复杂对象的构建与它的表示分离,使用同样的构建过程可以创建不同的表示 
*/ 
class product 
{ 
public $_type = null; 
public $_size = null; 
public $_color = null; 

public function settype($type) 
{ 
echo "set product type
"; 
$this->_type = $type; 
} 

public function setsize($size) 
{ 
echo "set product size
"; 
$this->_size = $size; 
} 

public function setcolor($color) 
{ 
echo "set product color
"; 
$this->_color = $color; 
} 
} 

$config = array( 
"type"=>"shirt", 
"size"=>"xl", 
"color"=>"red", 
); 

// 没有使用bulider以前的处理 
$oproduct = new product(); 
$oproduct->settype($config['type']); 
$oproduct->setsize($config['size']); 
$oproduct->setcolor($config['color']); 


// 创建一个builder类 
class productbuilder 
{ 
var $_config = null; 
var $_object = null; 

public function productbuilder($config) 
{ 
$this->_object = new product(); 
$this->_config = $config; 
} 

public function build() 
{ 
echo "--- in builder---
"; 
$this->_object->settype($this->_config['type']); 
$this->_object->setsize($this->_config['size']); 
$this->_object->setcolor($this->_config['color']); 
} 

public function getproduct() 
{ 
return $this->_object; 
} 
} 

$objbuilder = new productbuilder($config); 
$objbuilder->build(); 
$objproduct = $objbuilder->getproduct();