PHP Interceptor

* PHP Built-In Interceptor메소드들

Method	Description
__get($property)	Invoked when an undefined property is accessed
__set($property)	Invoked when a value is assigned to an undefined property
__isset($property)	Invoked when isset() is called on an undefined property
__unset($property)	Invoked when unset() is called on an undefined property
__call($method, $arg_array)	Invoked when an undefined method is called

http://develturk.com/2009/04/18/interceptor-methods-__call-php-overloading/

* __call() override

/*

02.*  An Interceptor Example for __call() method

03.*  Ersin Güvenç.

04.*/

05. 

06.Class NameWriter

07.{

08./*

09.*  @param - 1: name  - instance of Name Class

10.*/

11.function writeName(Name $name)

12.{

13.print $name->getName();

14.}

15. 

16.function writeAge(Name $name)

17.{

18.print $name->getAge();

19.}

20. 

21.}  //end of the class.

22. 

23.Class Name

24.{

25.private $writer; //NameWriter instance

26. 

27.function __construct(NameWriter $writer)

28.{

29.$this->writer = $writer;

30.}

31. 

32./* our __call method */

33.function __call($methodname, $args)

34.{

35.if(method_exists($this->writer, $methodname))

36.{

37.return $this->writer->$methodname($this);

38.}

39.}

40. 

41.function getName() { return "John"; }

42.function getAge() { return "27";}

43. 

44.} //end of the class.

45. 

46.//Our Super Object.

47.$name = new Name( new NameWriter() );

48. 

49.$name->writeName();

50.$name->writeAge();

51. 

52.//OUTPUT

53.//Jonn

54.//27

* __autoload() override

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30

# 절대 경로 define('_ROOT_PATH_', '/www/설치경로');   # 클래스 자동 인클루드 function __autoload($class_name) {         # 클래스명중 경로 추출     $tmp_args = explode(' ', preg_replace( '/([a-z0-9])([A-Z])/', "$1 $2",$class_name));     $class_path_name = sprintf("%s/{$class_name}",strtolower($tmp_args[0]));           # 체크          if(!class_exists($class_path_name,false))     {         # classes 폴더         if(file_exists(_ROOT_PATH_.'/classes/'.$class_path_name.'.class.php') !==false){             include_once _ROOT_PATH_.'/classes/'.$class_path_name.'.class.php';         }           # modules 폴더         else if(file_exists(_ROOT_PATH_.'/modules/'.$class_path_name.'.class.php') !==false){             include_once _ROOT_PATH_.'/modules/'.$class_path_name.'.class.php';         }           # 기타 만든 클래스 폴더 [첫대문자만 폴더로 지원]         # ( /my/MyTest.class.php -> MyTest.class.php)         else if(file_exists(_ROOT_PATH_.'/'.$class_path_name.'.class.php') !==false){             include_once _ROOT_PATH_.'/'.$class_path_name.'.class.php';         }     } }

PHP5에서 기본제공하는 spl_autoload_register 함수를 이용할수도 있다.

(실사용예는 오픈소스인 Log4php소스코드 참고할것)