何时在PHP中不调用__destruct? [英] When will __destruct not be called in PHP?

问题描述

class MyDestructableClass {
   function __construct() {
       print "\nIn constructor\n";
       $this->name = "MyDestructableClass";
   }

   function __destruct() {
       print "\nDestroying " . $this->name . "\n";
   }
}

$obj = new MyDestructableClass();

当以上脚本处于 complex 环境中时，当exit时不会调用__destruct，但是我无法轻松重现.有人注意到了吗?

When the above script is in a complex environment,the __destruct won't get called when exit,but I can't reproduce it easily.Have someone ever noticed this ?

编辑

我将在此处发布所有内容，这是symfony的测试环境，这意味着如果您熟悉框架，则可以轻松地重现它:

I'll post the whole stuff here,it's the testing environment of symfony,which means you can easily reproduce it if you are familar with the framework:

require_once dirname(__FILE__).'/../bootstrap/Doctrine.php';


$profiler = new Doctrine_Connection_Profiler();

$conn = Doctrine_Manager::connection();
$conn->setListener($profiler);

$t = new lime_test(0, new lime_output_color());

class MyDestructableClass {
   function __construct() {
       print "\nIn constructor\n";
       $this->name = "MyDestructableClass";
   }

   function __destruct() {
       print "\nDestroying " . $this->name . "\n";
   }
}

$obj = new MyDestructableClass();
$news = new News();

$news->setUrl('http://test');
$news->setHash('http://test');
$news->setTitle('http://test');
$news->setSummarize('http://test');
$news->setAccountId(1);
$news->setCategoryId(1);
$news->setThumbnail('http://test');
$news->setCreatedAt(date('Y-m-d H:i:s',time()));
$news->setUpdatedAt(date('Y-m-d H:i:s',time()));
$news->save();
exit();

推荐答案

__destruct将不称为:

• 如果exit在另一个析构函数中被调用
• 取决于PHP版本:如果在注册到register_shutdown_function的关闭函数中调用exit
• 如果代码中出现致命错误
• 如果另一个析构函数抛出异常
• 如果您尝试在析构函数中处理异常(PHP> = 5.3.0)

• If exit is called in another destructor
• Depending on the PHP Version: if exit is called in a shutdown function registered with register_shutdown_function
• If there is a fatal error somewhere in the code
• If another destructor throws an exception
• If you try to handle an exception in a destructor (PHP >= 5.3.0)

猜猜这就是我现在能想到的一切

Guess that's all I can think of right now

&帕斯卡尔·马丁(Pascal MARTIN)说了什么.这是调试的第一步.

& What Pascal MARTIN said. That's the first step of debugging that.

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