class Person { /** * For the sake of demonstration, we"re setting this private */ private $_allowDynamicAttributes = false; /** * type=primary_autoincrement */ protected $id = 0; /** * type=varchar length=255 null */ protected $name; /** * type=text null */ protected $biography; public function getId() { return $this->id; } public function setId($v) { $this->id = $v; } public function getName() { return $this->name; } public function setName($v) { $this->name = $v; } public function getBiography() { return $this->biography; } public function setBiography($v) { $this->biography = $v; }}
通过ReflectionClass,我们可以得到Person类的以下信息:
常量 Contants
属性 Property Names
方法 Method Names
静态属性 Static Properties
命名空间 Namespace
Person类是否为final或者abstract
只要把类名”Person”传递给ReflectionClass就可以了:
$class = new ReflectionClass('Person');
* 获取属性(Properties):
$properties = $class->getProperties();foreach($properties as $property) { echo $property->getName()."\n";}// 输出:// _allowDynamicAttributes// id// name// biography
默认情况下,ReflectionClass会获取到所有的属性,private 和 protected的也可以。如果只想获取到private属性,就要额外传个参数:
$private_properties = $class->getProperties(ReflectionProperty::IS_PRIVATE);
可用参数列表:
ReflectionProperty::IS_STATIC
ReflectionProperty::IS_PUBLIC
ReflectionProperty::IS_PROTECTED
ReflectionProperty::IS_PRIVATE
如果要同时获取public 和private 属性,就这样写:ReflectionProperty::IS_PUBLIC | ReflectionProperty::IS_PROTECTED
通过$property->getName()可以得到属性名,通过getDocComment可以得到写给property的注释。
foreach($properties as $property) { if($property->isProtected()) { $docblock = $property->getDocComment(); preg_match('/ type\=([a-z_]*) /', $property->getDocComment(), $matches); echo $matches[1]."\n"; }}// Output:// primary_autoincrement// varchar// text
有点不可思议了吧。竟然连注释都可以取到。
* 获取方法(methods):通过getMethods() 来获取到类的所有methods。返回的是ReflectionMethod对象的数组。
不再演示。
* 最后,通过ReflectionMethod来调用类里面的method。
$data = array("id" => 1, "name" => "Chris", "biography" => "I am am a PHP developer");foreach($data as $key => $value) { if(!$class->hasProperty($key)) { throw new Exception($key." is not a valid property"); } if(!$class->hasMethod("get".ucfirst($key))) { throw new Exception($key." is missing a getter"); } if(!$class->hasMethod("set".ucfirst($key))) { throw new Exception($key." is missing a setter"); } // Make a new object to interact with $object = new Person(); // Get the getter method and invoke it with the value in our data array $setter = $class->getMethod("set".ucfirst($key)); $ok = $setter->invoke($object, $value); // Get the setter method and invoke it $setter = $class->getMethod("get".ucfirst($key)); $objValue = $setter->invoke($object); // Now compare if($value == $objValue) { echo "Getter or Setter has modified the data.\n"; } else { echo "Getter and Setter does not modify the data.\n"; }}