MyException.php

<?php
class MyException extends Exception
{
    public function __construct($message, $code = 0)
    {
        parent::__construct($message, $code);
    }

    public function __toString()
    {
        $message = "<h2>出现异常了，信息如下</h2>";
        $message .= "<p>" . __CLASS__ . "[{$this->code}]:{$this->message}</p>";
        return $message;
    }

    public function test()
    {
        echo "this is a test";
    }

    public function stop()
    {
        exit('script end...');
    }
    //自定义其他方法
}

try {
    echo "出现异常啦";
    throw new MyException('测试自定义异常', 3);
} catch (MyException $e) {
    echo $e->getMessage();//测试自定义异常
    echo "<hr/>";
    echo $e;//tostring
    echo "<hr/>";
    $e->test();//this is a test
    echo "<hr/>";
    $e->stop();//script end...
}
echo "<hr/>";
echo "continue...";
?>

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