Ya thank you. I understand what to do now. But as per my requirement

Example

"9","9018188855","0","A","2"

If the preference is zero we have to make all category zero

"10","7259756747","1#5#7","A","3"

Here we have three preferences 1,5,7 Now I have to make these categories as '1' in DB and don't change the remaining categories. If I write "ON DUPLICATE KEY UPDATE cat1=? and cat2=? etc...." how can we know the values presented in DB. If I do select and fetch and update it make my program bulky. Any suggestions????

In reply to Re^2: Error in $sth->execute() by ravi45722
in thread Error in $sth->execute() by ravi45722

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