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php析构函数疑惑

时间:2021-07-01 10:21:17 帮助过:20人阅读

  1. <!--?phpclass Test { public $start; public $end; public function __construct() { echo "__construct<br /-->"; $this->start = microtime(true); } public function test() { echo "in test()<br>"; throw new Exception("error", 500); // 抛出异常 } public function __destruct() { echo "__destruct<br>"; }}$test = new Test();$test->test();

方法里抛出异常后,不会调用析构函数:


try异常后能调用析构函数:

  1. <!--?phpclass Test { public $start; public $end; public function __construct() { echo "__construct<br /-->"; $this->start = microtime(true); } public function test() { echo "in test()<br>"; try { // try 异常 throw new Exception("error", 500); // 抛出异常 } catch(Exception $e) { } } public function __destruct() { echo "__destruct<br>"; }}$test = new Test();$test->test();

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