推荐资料
Php基础教程http://www.w3school.com.cn/php/index.asp
Php教学代码https://sourceforge.net/projects/dvwa/files/DVWA-1.0.7.zip
Web测试环境http://www.newhua.com/soft/41626.htm
测试sql注入
http://127.0.0.1/dvwa/vulnerabilities/sqli/?id=%27+union+select+user%2Cpassword+from+users%23&Submit=Submit
课后了解
http://www.php.net/manual/zh/security.database.sql-injection.php