[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"$ftrz0UT0CO5szYt0ZMg4G_x9RJhNacO8vsarmQ2cLVMA":3},{"answer":4,"createTime":5,"id":6,"options":7,"origin":12,"question":19,"related":20,"source":30,"type":31},[],"2025-03-03 11:32:54",178230115,[8,9,10,11],"final","interface","abstract","static",{"count":13,"courseId":14,"courseImg":15,"courseName":16,"workId":17,"workName":18},22,"3fa8234eddcae31cf89df2d1ad61356a","https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fe784bd721368b6ada99095827d0d2cea.jpg","PHP程序设计","work_40961284","面向对象程序设计","当我们不希望一个类被继承时,应该使用什么关键字对这个类进行修饰?( )",[21,32,41,50,59,68,77,84,93,96],{"answer":22,"createTime":5,"id":23,"options":24,"question":29,"source":30,"type":31},[],178230107,[25,26,27,28],"类名不区分大小写","实例化类时,如果没有参数,可以省略小括号","定义类使用class关键字","定义类时,类中的成员至少要有一个","下列关于类的描述中,错误的是( )","v1",0,{"answer":33,"createTime":5,"id":34,"options":35,"question":40,"source":30,"type":31},[],178230108,[36,37,38,39],"类名表示对象的具体类型","对象的命名遵循PHP中变量的命名规则","实例化时不用传递参数也不能省略类名后的小括号","new关键字用于实例化对象","下面关于实例化类的描述错误的是( )",{"answer":42,"createTime":5,"id":43,"options":44,"question":49,"source":30,"type":31},[],178230109,[45,46,47,48],"2","4","8","0","观察下面代码,程序的运行结果为( ). <?php class Test { public $num = 2; } $obj1 = new Test(); $obj2 = $obj1; $obj1->num = 4; print_r($obj2->num)",{"answer":51,"createTime":5,"id":52,"options":53,"question":58,"source":30,"type":31},[],178230110,[54,55,56,57],"析构方法和构造方法的调用时机相同","析构方法是在对象创建时初始化对象,而构造方法是在对象销毁时释放额外资源","构造方法可以有参数,而析构方法不能有参数","析构方法可以使用类名的方式声明","以下关于构造方法和析构方法的说法正确的是( )",{"answer":60,"createTime":5,"id":61,"options":62,"question":67,"source":30,"type":31},[],178230111,[63,64,65,66],"访问修饰限定符可以限定成员(属性、方法)被访问的区域","public在类外、类内、继承类中都可以被访问到","protected只能在类内以及继承类中被访问到","如果想要体现封装性,需要使用public或private对成员进行限定","关于访问修饰限定符的描述,下列说法错误的是( )",{"answer":69,"createTime":5,"id":70,"options":71,"question":76,"source":30,"type":31},[],178230112,[72,73,74,75],"封装性","多态性","继承性","扩展性","同一操作作用于不同的对象,会产生不同的执行结果,这体现了面向对象的哪一个特点?( )",{"answer":78,"createTime":5,"id":79,"options":80,"question":83,"source":30,"type":31},[],178230113,[81,8,9,82],"global","extends","以下选项中可以实现继承的关键字是( )",{"answer":85,"createTime":5,"id":86,"options":87,"question":92,"source":30,"type":31},[],178230114,[88,89,90,91],"self","this","parent","父类名","一个子类要调用父类的成员方法,需要使用关键字是( )",{"answer":94,"createTime":5,"id":6,"options":95,"question":19,"source":30,"type":31},[],[8,9,10,11],{"answer":97,"createTime":5,"id":98,"options":99,"question":104,"source":30,"type":31},[],178230116,[100,101,102,103],"访问修饰符可以限定成员被访问的区域","public修饰的成员在类外、类内和子类中都可以被访问","protected只能在类内以及子类中被访问到","private修饰的成员可以在子类中被访问","关于访问修饰符的描述,下列说法错误的是( )"]