PHP event mechanism based on AS3-PHP source code

PHP event mechanism based on AS3 PHP event mechanism based on AS3

 Type = trim ($ type);}/*** get event string */public function _ toString () {return $ this-> type ;}} /*** Event dispatch *** @ author lonely * @ create 2010-10-21 * @ version 0.1 * @ lastupdate lonely * @ package Event */class EventDispatcher {private $ _ callback_method; /*** ADD Event ** @ param event $ Event * @ param string $ method * @ param string | object $ class * @ return boolean true */public function attach (Event $ event, $ method, $ Class = null) {$ event-> target = $ this; $ eventstr = $ this-> _ create_event_str ($ event ); if ($ this-> has ($ event, $ method, $ class) return true; if ($ class! = Null) {$ this-> _ check_method ($ class, $ method ); $ this-> _ callback_method [$ eventstr] [] = $ this-> _ create_listener_method ($ eventstr, $ class, $ method );} else {$ this-> _ check_function ($ method); $ this-> _ callback_method [$ eventstr] [] = $ this-> _ create_listener_fn ($ eventstr, $ method);} return true ;} /*** dispatch Event ** @ param event $ Event * @ param string $ method * @ param string | object $ class * @ return void */public functi On dispatch (Event $ event) {$ eventstr = $ this-> _ create_event_str ($ event); if ($ this-> _ check_callback ($ eventstr )) {foreach ($ this-> _ callback_method [$ eventstr] as $ v) {if ($ v ['object']) {if (is_object ($ v ['class']) {$ v ['class']-> $ v ['method'] ($ event );} else {call_user_func (array ($ v ['class'], $ v ['method']), $ event );}} else {$ v ['function'] ($ event) ;}}/ *** delete Event * @ param event $ event * @ param string $ me Thod * @ param string $ class * @ return boolean true */public function detact (Event $ event, $ method, $ class = null) {$ eventstr = $ this-> _ create_event_str ($ event); if (! $ This-> _ check_callback ($ eventstr) return true; if (! $ This-> has ($ event, $ method, $ class) return true; if ($ class! = Null) {$ this-> _ check_method ($ class, $ method); foreach ($ this-> _ callback_method [$ eventstr] as $ k => $ v) {if ($ v = $ this-> _ create_listener_method ($ eventstr, $ class, $ method ))) {unset ($ this-> _ callback_method [$ eventstr] [$ k]); return true ;}} return true ;} else {$ this-> _ check_function ($ method); foreach ($ this-> _ callback_method [$ eventstr] as $ k => $ v) {if ($ v = $ this-> _ create_listener_fn ($ eventstr, $ method ))){ Unset ($ this-> _ callback_method [$ eventstr] [$ k]); return true ;}} /*** check whether the Event is listened * @ param event $ Event * @ param string $ method * @ param string $ class * @ return boolean */public function has (event $ Event, $ method, $ class = null) {$ eventstr = $ this-> _ create_event_str ($ event); if ($ class! = Null) {$ this-> _ check_method ($ class, $ method); if ($ this-> _ check_callback ($ eventstr )) {foreach ($ this-> _ callback_method [$ eventstr] as $ v) {if (is_object ($ v ['class']) {$ v_class = get_class ($ v ['class']);} else {$ v_class = $ v ['class'];} if (is_object ($ class )) {$ s_class = get_class ($ class);} else {$ s_class = $ class;} $ temp_v = array ("class" => $ v_class, "method" => $ method,); $ temp_s = array ("class" => $ s_class, "meth Od "=> $ method,); if ($ temp_v = $ temp_s) {return true ;}}} else {$ this-> _ check_function ($ method ); if ($ this-> _ check_callback ($ eventstr) {foreach ($ this-> _ callback_method [$ eventstr] as $ v) {if ($ method = $ v ['function']) {return true ;}}} return false ;} /*** check whether the specified class has a specified method * @ param string $ class * @ param string $ method * @ exception Exception_Event * @ return void */private function _ check_method ($ Class, $ method) {if (! Method_exists ($ class, $ method) {throw new Exception_Event (get_class ($ class ). "not exist ". $ method. "method", 1) ;}}/*** check whether the specified function exists * @ param string $ function * @ return void */private function _ check_function ($ function) {if (! Function_exists ($ function) {throw new Exception_Event ($ function. "function not exist", 2 );}} /*** check whether a specified event has a listener function * @ param string $ eventstr * @ return boolean */private function _ check_callback ($ eventstr) {if (isset ($ this-> _ callback_method [$ eventstr]) & is_array ($ this-> _ callback_method [$ eventstr]) {return true ;} return false;}/*** create a listener function array * @ param string $ eventstr * @ param string $ function * @ return array */private function _ create_listener_fn ($ eventstr, $ function) {return array ("object" => false, "function" => $ function ,);} /*** create a listener array * @ param string $ eventstr * @ param string $ class * @ param string $ method * @ return array */private function _ create_listener_method ($ eventstr, $ class, $ method) {return array ("object" => true, "class" => $ class, "method" => $ method ,);} /*** create an Event string * @ param event $ Event * @ return string */private function _ create_event_str (event $ Event) {$ classstr = strtolower (get_class ($ event); $ eventstr = (string) $ event; return $ classstr. $ eventstr ;}} class test extends EventDispatcher {} function t ($ e) {print_r ($ e-> a) ;}$ v = new test (); $ e = new Event ("test"); $ v-> attach ($ e, "t"); $ v-> detact ($ e, "t "); echo $ v-> has ($ e, "t"); $ e-> a = "dd"; $ v-> dispatch ($ e );

The above is the PHP event mechanism implemented by the AS3 imitation. For more information, see PHP Chinese website (www.php1.cn )!