php: sample code for destructor call

phpDestructorCall

class a{
    function construct(){
        echo "start to construct a obj\n";
    }   
    function pide($a,$b)
    {   
        //exit(1);//destruct called
        return $a/$b; //destruct called when $b=0;
    }   
    function add($a,$b)
    {   
        throw new Exception ("daone");//destruct called
        return $a+$b;
    }   
    function destruct(){
        echo "start to destruct\n";
    }   
}
try{
    $first = new a();
    //$r = $first->pide(4,0);
    $first->add(4,0);
}
catch(Exception $e) 
{
    echo "cath exception \n";
}

As can be seen from the above example, phpthrows an exception (regardless of whether there is a try catch outside), directlyWhen exiting, the destructor will be called.

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