php析構函數呼叫
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"; }
從上面的範例可以看出,php拋出異常(不管外面有沒有try catch),直接退出的情況下,都會呼叫析構函數。
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