How to terminate the class operation in the class constructor

How to terminate the class operation in the class constructor, such as a classclass & nbsp; car & nbsp ;{& nbsp; & nbsp; public & nbsp; $ name; & nbsp; function & nbsp ;__ construct () & nbsp ;{& nbsp; & nb how to terminate class running in class constructor
For example, a class


Class car {

Public $ name;


Function _ construct (){
If ($ name = 'end ')
// Set termination class execution here

}

Function showname (){
Echo 'name is '. $ this-> name;
}

}


Then

$ Aaa = new car ();

$ Aaa-> name = 'test1 ';
$ Aaa-> showname (); // Print name is test1


$ Bbb = new car ();
$ Bbb-> name = 'end ';
$ Bbb-> showname (); // no content should be displayed

Is there any statement like break in a loop that can interrupt the execution of the class, but the statement located before the statement in the constructor can still be executed normally.

------ Solution --------------------

PHP code

Class car {public $ name; function _ construct () {} public function showname () {echo 'name is '. $ this-> name;} public function setname ($ name) {$ this-> name = $ name; if ($ this-> name = 'end ') {exit () ;}}$ aaa = new car (); $ aaa-> setname ('test1'); $ aaa-> showname (); $ bbb = new car (); $ bbb-> setname ('end'); $ bbb-> showname ();
------ Solution --------------------
I thought you were about to stop rather than stop the entire operation.

  
  

   
   
PHP code
   
   
class car  {    public   $name;    protected $goon;    function   __construct()   {        $this->goon=true;    }    public function   showname()   {        if ($this->goon==true){            echo   'name   is   '.$this-> name;        }    }    public function setname($name){        $this->name=$name;        if ($this->name=='end'){            $this->goon=false;        }    }}$aaa=new car();$aaa->setname('test1');$aaa-> showname();$bbb=new  car();$bbb->setname('end');$bbb-> showname();$bbb=new  car();$bbb->setname('ttt');$bbb-> showname();