Question

最近搬到了php7。发生以下错误：

argument 1 passed to MyClass\Throwable::exceptionHandler() must be an instance of Exception, instance of Error given

各自的班级

namespace MyClass;

class Throwable
{
    public function exceptionHandler(\Exception $exception)
    {
        //logic here
    }
}

如docs

中所述

现在通过抛出错误例外来报告大多数错误。

这是否意味着我必须向异常处理程序提供Error或更一般Throwable的实例？

Answer 1

Errors和Exceptions都延伸Throwable但是错误不会从Exception延长。

因此，您的ExceptionHandler必须接受Throwable类型的对象才能接受Errors。

这是最简单的解决方法，但您可能希望重命名$ exception以使其清晰。

namespace MyClass;

class Throwable
{
    public function exceptionHandler(\Throwable $exception)
    {
        //logic here
    }
}

注意：新的Error类不应与ErrorException混淆，Exception经常被用作将PHP 5错误转换为具有语义含义的/home/a/torch/install/bin/luajit: /home/a/torch/install/share/lua/5.1/nn/THNN.lua:699: Assertion `cur_target >= 0 && cur_target < n_classes' failed. at /tmp/luarocks_nn-scm-1-6937/nn/lib/THNN/generic/ClassNLLCriterion.c:31 stack traceback: [C]: in function 'v' /home/a/torch/install/share/lua/5.1/nn/THNN.lua:699: in function 'ClassNLLCriterion_updateOutput' ...e/a/torch/install/share/lua/5.1/nn/ClassNLLCriterion.lua:41: in function 'updateOutput' ...torch/install/share/lua/5.1/nn/CrossEntropyCriterion.lua:13: in function 'forward' .../a/torch/install/share/lua/5.1/nn/StochasticGradient.lua:35: in function 'train' a.lua:34: in main chunk [C]: in function 'dofile' /home/a/torch/install/lib/luarocks/rocks/trepl/scm-1/bin/th:145: in main chunk [C]: at 0x00406670对象的设备。

http://php.net/manual/en/class.error.php

php7

1 个答案: