[edit] Last updated: Fri, 24 May 2013

Exception::__construct

(PHP 5 >= 5.1.0)

Exception::__construct — 异常构造函数

说明

public Exception::__construct() ([ string $message = "" [, int $code = 0 [, Exception $previous = NULL ]]] )

异常构造函数。

参数

message: 抛出的异常消息内容。
code: 异常代码。
previous: 异常链中的前一个异常。

更新日志

版本	说明
5.3.0	增加`previous`参数。

注释

Note:
The message is NOT binary safe.

add a note User Contributed Notes Exception::__construct - [2 notes]

down

mario dot mueller at twt dot de ¶

4 years ago


This would be nice for handling ZendFramework Exceptions to your own framwork or CMS Exceptions:





<?php


try


{


    $oZFResponse = $oZFHttpClient->request();


}


catch(Zend_Http_Exception $exZFHttpEx)


{


    throw new Runtime_{$oZFHttpEx->getCode()}_Exception('some ErrorMailing Message', 500, $oZFHttpEx);


}





?>





Regards,


Mario

down

mattsch at gmail dot com ¶

4 months ago


Be aware that while $previous is quite useful in providing exception chaining and better traceability, none of the internal php exceptions (e.g. PDOException, ReflectionException, etc) are called internally within php with $previous in mind.  



So if your code throws an exception, recovers from it, then catches one of these internal php exceptions, recovers from it and throws another exception, you will not know the first exception that was thrown when calling getPrevious.



See: https://bugs.php.net/bug.php?id=63873

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