php.ini配置
php.ini配置中与此相关的有两个配置变量,下面是这两个变量及其默认值,以下是引用片段:
display_errors = Off
error_reporting = E_ALL & ~E_NOTICE
display_errors 变量的目的很明显 —— 它告诉PHP是否显示错误。默认值是 Off。现在我们的目的是显示错误提示,那么:
display_errors = On
E_ALL,这个设置会显示从不良编码实践到无害提示到出错的所有信息,E_ALL 对于开发过程来说有点太细,因为它连变量未初始化也显示提示,而这一点正是PHP“高级”的一个特征。幸好,error_reporting的默认值是“E_ALL & ~E_NOTICE”,这样就只看到错误和不良编码了,对程序无不利的提示则不会显示。
修改php.ini后需要重新启动Apache,这样才可以在apache中生效,当然你如果只在命令行下测试程序,是不需要这一步的。
显示值,宏定义:
1 E_ERROR
2 E_WARNING
4 E_PARSE
8 E_NOTICE
16 E_CORE_ERROR
32 E_CORE_WARNING
64 E_COMPILE_ERROR
128 E_COMPILE_WARNING
256 E_USER_ERROR
512 E_USER_WARNING
1024 E_USER_NOTICE
6143 E_ALL
2048 E_STRICT
4096 E_RECOVERABLE_ERROR
波比源码 » PHP中显示出错提示方法介绍
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