hi friends I am doing a simple student mark details project. for calculating rank I need to compare the total marks one by one. To do so i use *for loop.* so atlast while reaching the end of the table it shows the following warning. * Warning*: mysql_result() [function.mysql-result<http://127.0.0.1/pro/function.mysql-result>]: Unable to jump to row 18 on MySQL result index on line *50* It is because it has no next value to compare.How to use try..catch exception handling in this.?Or any other suggestion. Can anybody help me --Bavithra