set_exception_handler函数在ThinkPHP中的用法,thinkphpc函数
set_exception_handler函数在ThinkPHP中的用法,thinkphpc函数
本文实例讲述了set_exception_handler函数在ThinkPHP中的用法。分享给大家供大家参考。具体方法如下:
函数:
复制代码 代码如下:
string set_exception_handler ( callback $exception_handler )
定义和用法:
set_exception_handler() 函数设置用户自定义的异常处理函数。
该函数用于创建运行时期间的用户自己的异常处理方法。
该函数会返回旧的异常处理程序,若失败,则返回 null。
语法:
set_exception_handler(exception_function)
参数 | 描述 |
---|---|
error_function |
必需。规定未捕获的异常发生时调用的函数。 该函数必须在调用 set_exception_handler() 函数之前定义。 这个异常处理函数需要需要一个参数,即抛出的 exception 对象。 |
提示和注释:
提示:在这个异常处理程序被调用后,脚本会停止执行。
同样是在看TP代码的时候发现的这个函数,就想不明白了,自己以前咋就没关心过这些东西呢?(捶胸顿足ing。。。)
继续来看一下TP是怎么实现的,呃,为啥一定要用TP呢,嗯。那好吧,一会儿我把手册的例子也搬过来。
复制代码 代码如下:
public function appException($e)
{
halt($e->__toString());
}
set_exception_handler(array(&$this,"appException"));
呵呵,这个简单吧?因为我没有给出halt这个方法的实现,这样就足够了。
再看手册中的例子,
复制代码 代码如下:
function exception_handler($exception) {
echo "Uncaught exception: " , $exception->getMessage(), "n";
}
set_exception_handler('exception_handler');
throw new Exception('Uncaught Exception');
echo "Not Executedn";
其实呢,set_exception_handler就是设置了一下,当你的程序需要抛出一个异常的时候调用哪个自定义的函数。
就这么简单
注意事项:
set_exception_handler(“myException”) 不仅可以接受函数,还可以接受 类的方法(公开的静态方法 及 公开的非静态方法 都可以),但需要以 数组形式 传递,数组的第一值为“类名”,第二个参数为“方法名”
希望本文所述对大家的ThinkPHP框架程序设计有所帮助。
就是这么写的。对的。{$create_time|date='Y-m-d H:i:s',###} ,不过$create_time应该是11位的数字
参考资料:doc.thinkphp.cn/manual/use_function.html
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