So verwenden Sie Nicht-Trait-Methoden, um Mehrfachvererbung in Versionen vor PHP5.4 zu implementieren

_init_extends(); } protected function _init_extends(){ if(property_exists($this,'_extends')) { $extends=&$this->_extends; foreach($extends as $class) { $this->_extends($class); } } } public function _extends($class_name){ //分析目标 $ref = new ReflectionClass($class_name); //继承公共属性 $property_list=$ref->getProperties(ReflectionProperty::IS_PUBLIC); foreach($property_list as $property) { $property_name=$property->name; $property_value=$property->getValue(new $class_name); if($property_name==='_extends') { foreach($property_value as $c) { $this->_extends[]=$c; } }else{ if(!property_exists($this,$property_name)) { $this->{$property->name}=$property_value; } } } //继承公共方法 $method_list=$ref->getMethods(ReflectionMethod::IS_PUBLIC); foreach($method_list as $method) { $this->_extends_method[$method->name]=$method->class; } } function __call($m,$a){ if($c=$this->_extends_method[$m]) { eval("$c::$m(".'$a'.");"); } } } header('content-type:text/html;charset=utf-8'); class a{ public $a=5; public function say_name(){ echo '我叫'.$this->name.'
'; } } class b{ function say_age(){ echo '我今年'.$this->age.'岁
'; } } class c extends multi_extends{ public $_extends=array('a','b'); public function say_hellow(){ echo 'hellow '.$this->name.'
'; } } class d{ function say_goodbye(){ echo 'goodbye '.$this->name.'
'; } } class persion extends multi_extends{ public $_extends=array('c','d'); public $name="熊宝山"; public $age="20"; } //执行继承后的方法 $o=new persion(); $o->say_name(); $o->say_age(); $o->say_hellow(); $o->say_goodbye();