php: how to change string data become numeric data

Question

can you tell how to change this result in php and mysql script:

  Model                  Class
Ball                        S
Book                        A
Spoon
         


        

Answer 1

SELECT `Model`,
IF(`Class`='S', 1, 0) AS `S`,
IF(`Class`='A', 1, 0) AS `A`,
IF(`Class`='B', 1, 0) AS `B`,
IF(`Class`='C', 1, 0) AS `C`
FROM `inspection_report`