function checkEat($obj){
if($obj instanceof ICanEat){
$obj->eat('food');
}else{
echo "The obj can't eat.\n";
}
}
if($obj instanceof ICanEat){
$obj->eat('food');
}else{
echo "The obj can't eat.\n";
}
}
2018-01-28
Nbaplaye$jordan = new Nbaplayer();中的Nbaplayer()跟上面的class Nbaplayer()有關系嗎
2018-01-25
最新回答 / qq_啾皮卡丘_0
只要你創(chuàng)建了對象就會調(diào)用構造函數(shù) 包括你傳參數(shù)時 參數(shù)為對象也會調(diào)用,當程序運行遇到大括號時就會隱式調(diào)用析構函數(shù) 并不一定兩者次數(shù)會一樣
2018-01-22