Exabyte
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$rawticket = (int)$rawticket;
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you should read that article again and try to understand it. it's actually pretty well written. a_id obviously needs to be your primary key. SELECT DISTINCT instance1.a_id FROM RaceTable AS instance1,RaceTable AS instance2 WHERE instance1.a_id=instance2.a_id AND instance1.RaceNumber=[something] AND instance2.Driver=[something]
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right, have a php file send the invoice file to the user
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it won't work that way. mysql would basically be looking for a row where RaceNumber matches multiple values at the same time. what you need to do is join the table to itself: check this out: http://www.thelampblog.com/2010/05/24/mysql-self-join-a-table/
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$a = explode('/',$url); echo $a[0];
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protect the upload folder with a htaccess file and only serve the files through a php script.