页面出现 Notice: Undefined variable 的解决方法
这是php(做为现在的主流开发语言)警告信息，是由于未定义变量引起的。
解决方法：
修改php(做为现在的主流开发语言).ini
将： error_reporting = E_ALL
修改为：error_reporting = E_ALL & ~E_NOTICE
如果什么错误都不想让显示，直接修改：
display_errors = Off
一切OK，现在什么错误都不会显示了。
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DVWA
Damn Vulnerable Web App (DVWA) is a PHP/MySQL web application that is very vulnerable. Its main goals are to be an aid for security professionals to test their skills and tools in a legal environment, to help web developers better understand the process of securing web applications, and to help teachers/students teach/learn in a classroom environment Web application security. The goal of DVWA is to practice some of the most common web vulnerabilities through a simple and straightforward interface, with varying degrees of difficulty. Please note that this software
