PHP Collection 类
<?php /** * PHP collection 类(一) */ error_reporting(0); class Collection{ protected $_members = array(); public function addItem($obj,$key = null){ if(empty($key)) throw new Exception("The key is not given!"); if(isset($this->_members[$key])) throw new Exception("The key is exists"); $this->_members[$key] = $obj; } public function removeItem($key){ if(!isset($this->_members[$key])) throw new Exception("Invalid key"); unset($this->_members[$key]); } public function getItem($key){ if(!isset($this->_members[$key])) throw new Exception("Invalid key"); return $this->_members[$key]; } public function getLength(){ return sizeof($this->_members); } public function keys(){ return array_keys($this->_members); } } class person{ private $_name; private $_number; public function __construct($name,$number){ $this->_name = $name; $this->_number = $number; } public function __toString(){ return $this->_name.' is '.$this->_number; } } $testC = new superCollection(); $testC->spaddItem(new person('xiaojiang',25),'xiaojiang'); $testC->spaddItem(new person('xiaoxin',25),'xiaoxin'); //$testC->removeItem('xiaojiang'); //print_r($testC); /*try{ // var_dump($testC); //echo $testC->spgetItem('xiaojiang'); }catch(Exception $e){ echo $e->getmessage(); } */ class superCollection extends Collection{ private $_isLoaded = false; private $_onLoad; public function __call($method,$param){ if(substr($method,0,2) == 'sp' && is_callable( array(parent,substr($method,2)) ) ){ $this->_checkCallback(); return call_user_func_array(array(parent,substr($method,2)),$param); } } public function _checkCallback(){ if(!$_isLoaded && isset($this->_onLoad)){ $this->isLoaded = true; call_user_func($this->_onLoad,$this); } } public function setCallback($funName,$Obj = null,$param){ if($Obj){ $callback = array($Obj,$funName); }else{ $callback = $funName; } if(!is_callable($callback,false,$callbackName)){ throw new Exception("{$callbackName} can't be called"); return false; } $this->_onLoad = $callback; } } class course_collection extends superCollection{} class course{ private $_name; private $_course_code; private $_id; function __construct($name,$code,$id){ $this->_name = $name; $this->_course_code = $code; $this->_id = $id; } public function getId(){ return $this->_id; } } class student{ private $_name; private $_age; public function __construct($name,$age){ $this->_name = $name; $this->_age = $age; $this->_course = new course_collection(); $this->_course->setCallback('getCourse',$this); } public function getCourse($courseObj){ $date = array( 'xiaojiang'=> array( array('id'=>1,'name'=>'math','code'=>99), array('id'=>2,'name'=>'english','code'=>88) ), 'xiaoxin'=> array( array('id'=>3,'name'=>'math','code'=>77), array('id'=>4,'name'=>'english','code'=>66) ) ); foreach($date[$this->_name] as $k => $v){ $course = new course($v['name'],$v['code'],$v['id']); $courseObj->addItem($course,$course->getId()); } } public function getName(){ return $this->_name; } } try{ $Stud = new student('xiaojiang',25); //echo $Stud->getName(); print_r($Stud->_course->spgetItem(2)); }catch(Exception $e){ echo $e->getmessage(); } ?>
生命只有一次。