在家里电脑上自己做的项目，移到外网上时出现大量如下提示：
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant values - assumed 'values' inD:\wamp\www\yp\index.phpon line19
Notice: Use of undefined constant title - assumed 'title' inD:\wamp\www\yp\index.phpon line32
Notice: Use of undefined constant id - assumed 'id' inD:\wamp\www\yp\index.phpon line32
Notice: Use of undefined constant title - assumed 'title' inD:\wamp\www\yp\index.phpon line32
Notice: Use of undefined constant id - assumed 'id' inD:\wamp\www\yp\index.phpon line32
Notice: Use of undefined constant title - assumed 'title' inD:\wamp\www\yp\index.phpon line40
猛的一看，有点懵了，本来调试的好好的，怎么会突然出现错误？
翻译了下提示的意思，才明白原来PHP中允许中变量不经过声明而直接使用，但是如果设置了error_reporting后所有错误全显示的话，就会就出现提示，所以我们在写代码时最好养成习惯，变量使用前最好先声明
解决方案自然是设置下error_reporting打开php.ini将error_reporting = E_ALL 后面加上 & ~E_NOTICE
或者在全局配置文件里写error_reporting(0)
