查询语句中的数组用法 - MySQL通过PHP

Hey guys I'm new to PHP yet I gave a shot. There is a change in the requirements now for what I do. The values B1 to B11 are not the same any more. It can be from B1 to B6 or B1 to B50. So I can tell that I need an array to pass the value. However what I need to know is how do I include them in the $sql statement. Instead of B1 to B11 do I have to use any variables? Below is the code for reference.Any help would be greatly appreciated.Hey guys I'm new to PHP yet I gave a shot. Ther