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have u tried the center tag ?

you can use the isset() function here's a sample session_start(); if( !isset( $_SESSION['username']) ){ echo 'Unauthorized access'; die(); } hope this helps...

$time1 = '2009-04-27 09:18:10'; $time2 = '2009-04-27 11:18:10'; $time_diff = strtotime($time2) - strtotime($time1);//in seconds echo ($time_diff / 3600);//in hours here's the solution dude enjoy ;)

gptsven I gave you the true solution for the problem it's the left join if you fail to see that it's up to u i've done my work here...

You see the problem lies in using the left joins. any row even it doesn satisfy the join condition will be fetched that's why u r getting a wrong count. so either use inner joins or post ur table structures and the result you want to get maybe i can help...