在php中破解的mysql查询

Question

我在php中有一个mySQL查询：

$query = "SELECT serial FROM code WHERE type='".$type."' AND year='".$year."' AND subject='".$subject."' AND mounth='".$mounth."' AND day='".$day."' ORDER BY serial DESC LIMIT 1";

当我回应它时（出于调试目的）我看到了：

SELECT serial FROM code WHERE type='in' AND year='391' AND subject='pcyear=393' AND mounth='04' AND day='1' ORDER BY serial DESC LIMIT 1  

subject ='pcyear = 393 附近有什么问题？

请帮助

Answer 1

您的$ subject变量设置为subject='pcyear=393。

Answer 2

我打赌如果你回去echo $subject你会得到pcyear=393

检查并确保正确分配$subject。