尝试在 $Fname = $_POST["Fname"];代码>行.error_reporting 属性值是多少?请参阅 this 或 this 了解表格中显示的值.

Try to do a phpinfo(); just before your $Fname = $_POST["Fname"]; line. What's the error_reporting property value ? See this or this to understand the value displayed in the table.

如果不是您所期望的，请检查该属性是否未被 php.ini 更改.您也可能编辑了错误的 php.ini 文件:XAMPP 倾向于复制原始 php.ini 文件并创建自己的文件.使用phpinfo();，在表格中搜索'php.ini'字符串:你会找到所使用的php.ini文件的路径.

If it's not what you expected, check that the property is not changed by php. It's also possible you edited the wrong php.ini file : XAMPP tends to copy the original php.ini file and create his own. Use phpinfo();, search for 'php.ini' string in the table : you will find the path of the php.ini file used.

最后一件事，也许问题是您在更改 php.ini 文件后没有正确重新启动 apache.问题是 xamp 是 apache 服务的一个独特进程.关闭 XAMP 不会使 apache 服务停止，你***使用 XAMPP 控制面板来停止/启动 apache.

Last thing, maybe the problem is that you did not properly restarted apache after you changed php.ini file. The thing is that xamp is a distinct process of the apache service. Closing XAMP do not make apache service to be stopped, you better use XAMPP Control Panel to stop/start apache.