<?php

try

{

    echo "比赛开始"."\n";

    throw new Exception('哇呀呀~运动员摔倒了'."\n",);

}

catch (Exception $e )

{

    echo "获取错误信息：".$e->getMessage()."\n";

    echo "获取错误编码：".$e->getCode()."\n";

}

echo "哎呀比赛结束了"."\n";

?>

<?php

//自定义异常

class MyException extends Exception   #自定义异常类继承自异常基类

{

    public function demo()

    {

        echo "快把运动员扶起来";

    }

}

try{

    echo "比赛开始"."\n";

    throw new MyException("哎呀运动员摔倒了",);

}

catch(MyException $e)

{

    echo $e->getCode()."\n";

    echo $e->getMessage()."\n";

    echo $e->demo()."\n";

}

echo "比赛结束"."\n";

?>

<?php

class myexception extends Exception

{

    public function demo()

    {

        echo "快把运动员扶起来"."\n";

    }

}

try{

    echo "比赛开始"."\n";

    throw new myexception('运动员被绊了一跤',); #尽管抛出的是myexception，但是却被原生exception捕捉到了，所以自定义exception应该放在第一个！

}

catch (Exception $e)

{

    echo $e->getMessage()."\n";

    echo $e->getCode()."\n";

    echo "上述是原生exception"."\n";

}

catch ( myexception $e)

{

    echo $e->getMessage()."\n";

    echo $e->getCode()."\n";

    echo $e->demo()."\n";

    echo "上述是自定义myexception"."\n";

}

?>

正确姿势：

<?php

class myexception extends Exception

{

    public function demo()

    {

        echo "快把运动员扶起来"."\n";

    }

}

try{

    echo "比赛开始"."\n";

    throw new myexception('运动员被绊了一跤',);

}

catch ( myexception $e)

{

    echo $e->getMessage()."\n";

    echo $e->getCode()."\n";

    echo $e->demo()."\n";

    echo "上述是自定义myexception"."\n";

}

catch (Exception $e)

{

    echo $e->getMessage()."\n";

    echo $e->getCode()."\n";

    echo "上述是原生exception"."\n";

}

?>

<?php

function heichouxianwaA($mywords)

{

    echo $mywords->getMessage();

}

set_exception_handler('heichouxianwaA');

throw new Exception("我满心欢喜打开我的未来");

?>