Exception_Observer.php

<?php
/**
 * 给观察者定义的规范
 * Interface Exception_observer
 */
interface Exception_Observer
{
    public function update(Observable_Exception $e);
}

Logging_Exception_Observer.php

<?php

class Logging_Exception_Observer implements Exception_Observer
{
    protected $_filename = "D:/error/imoocException.log";

    function __construct($filename = null)
    {
        if ($filename != null && is_string($filename)) {
            $this->_filename = $filename;
        }
    }

    /**
     * 记录日志
     * @param Observable_Exception $e
     */
    public function update(Observable_Exception $e)
    {
        $message = "时间：" . date("Y-m-d H:i:s") . PHP_EOL;
        $message .= "信息：" . $e->getMessage() . PHP_EOL;
        $message .= "追踪信息：" . $e->getTraceAsString() . PHP_EOL;
        $message .= "文件：" . $e->getFile() . PHP_EOL;
        $message .= "行号：" . $e->getLine() . PHP_EOL;
        error_log($message, 3, $this->_filename);
    }
}

Emailling_Exception_Observer.php

<?php

class Emailling_Exception_Observer implements Exception_Observer
{
    protected $_email = '403133112@qq.com';

    public function __construct($email = null)
    {
        if ($email != null && filter_var($email, FILTER_VALIDATE_EMAIL)) {
            $this->_email = $email;
        }
    }

    /**
     * 发送邮件
     * @param Observable_Exception $e
     */
    public function update(Observable_Exception $e)
    {
        $message = "时间:" . date("Y-m-d H:i:s") . PHP_EOL;
        $message .= "信息:" . $e->getMessage() . PHP_EOL;
        $message .= "追踪信息:" . $e->getTraceAsString() . PHP_EOL;
        $message .= "文件:" . $e->getFile() . PHP_EOL;
        $message .= "行号:" . $e->getLine() . PHP_EOL;
        error_log($message, 1, $this->_email);
    }
}

test.php

<?php
require_once 'Exception_observer.php';
require_once 'Observable_Exception.php';
require_once 'Logging_Exception_Observer.php';
require_once 'Emailling_Exception_Observer.php';

Observable_Exception::attach(new Logging_Exception_Observer());
Observable_Exception::attach(new Logging_Exception_Observer('D:/error/test1.log'));
//Observable_Exception::attach(new Emailling_Exception_Observer());

class MyException extends Observable_Exception
{

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

    public function test1()
    {
        echo "我是自定义的方法处理这个异常";
    }
}

try {
    throw new MyException('出现异常了，记录一下下！！！');
} catch (MyException $e) {
    echo $e->getMessage();
    echo '<hr/>';
    $e->test();
    echo "<hr/>";
    $e->test1();
}