php错误处理技术,顶级错误处理器
php异常处理技术,顶级异常处理器
php对异常的处理与java一样,用到的是try{}catch(){}
定义顶级异常处理器用到的函数是
set_exception_handler("My_exception");
这里的My_expection是开发者自定义的异常处理函数,既顶级异常处理器,只有当程序中没有函数来处理异常才有顶级异常处理器来处理异常,如果没有定义顶级异常处理器,则由系统默认的异常处理器来处理异常
举例说明:

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