PHP - 是否可以在 __destruct() 方法中使用自定义异常处理程序

Question

有没有办法在类的方法中使用自定义异常处理程序，而不是默认异常处理程序__destruct？

例如：

function myExceptionHandler($e)

{

    echo "custom exception handler";

    if(is_object($e) && method_exists($e,'getMessage'))

        echo $e->getMessage();

}

set_exception_handler('myExceptionHandler');

class MyClass {

    public function __construct()

    {

        // myExceptionHandler handles this exception

        //throw new Exception("Exception from " . __METHOD__);

    }

    public function doStuff()

    {

        // myExceptionHandler handles this exception

        //throw new Exception("Exception from " . __METHOD__);

    }

    public function __destruct()

    {

        // default exception handler 

        throw new Exception("Exception from " . __METHOD__);

    }

}

$myclass = new MyClass();

$myclass->doStuff();

即使在方法set_exception_handler内调用__destruct，仍使用默认处理程序：

    public function __destruct()

    {

        $callable = function($e)

        {

            echo "custom exception handler".PHP_EOL;

            if(is_object($e) && method_exists($e,'getMessage'))

                echo $e->getMessage();

        };

        set_exception_handler($callable);

        throw new Exception("Exception from " . __METHOD__); // default exception handler

    }

Answer 1

从手册页笔记：尝试从析构函数（在脚本终止时调用）抛出异常会导致致命错误。因此，首先在析构函数中使用异常可能是个坏主意。当脚本完成处理抛出的异常时，可能没有任何代码。也许这段代码最好放在close()类的方法中。

Answer 2

也许是这样的？<?phpclass MyException extends Exception {&nbsp; &nbsp; public function __construct() {&nbsp; &nbsp; &nbsp; &nbsp; parent::__construct('my exception');&nbsp; &nbsp; }}class MyClass {&nbsp; &nbsp; public function __construct()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; // myExceptionHandler handles this exception&nbsp; &nbsp; &nbsp; &nbsp; //throw new Exception("Exception from " . __METHOD__);&nbsp; &nbsp; }&nbsp; &nbsp; public function doStuff()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; // myExceptionHandler handles this exception&nbsp; &nbsp; &nbsp; &nbsp; //throw new Exception("Exception from " . __METHOD__);&nbsp; &nbsp; }&nbsp; &nbsp; public function __destruct()&nbsp; &nbsp; {&nbsp; &nbsp; &nbsp; &nbsp; // default exception handler&nbsp;&nbsp; &nbsp; &nbsp; &nbsp; throw new MyException();&nbsp; &nbsp; }}$myclass = new MyClass();$myclass->doStuff();