i am entering the starttime and end time through drop down boxes.The vals are stored in 24 hr format in a table with fields proj_sttime and proj_endtime.
Datediff function does not work with PHP......
i want to calculate the difference .Any suggesstions???
Also plz let me know the concept of timestamps.....coz i am entering the values in the table by using concantenation and do not know anything abt that.......