数据库未更新

Question

.put()

代码中是否有引号规则违规。因为数据库没有更新。

Answer 1

你缺少逗号，

mysqli_query($connect,"UPDATE student SET name='$name',rollnumber='$nrollnumber', mark='$mark', department='$department' WHERE rollnumber='$rollnumber'");

Answer 2

mysqli_query($connect,"UPDATE student SET name='".$name."', rollnumber='".$nrollnumber."', mark='".$mark."', department='".$department."', WHERE rollnumber='".$rollnumber."'");