elric

ok, the escape slashes werent needed for 'Roll Number' next your query is SELECT * FROM result WHERE 'Roll Number' = so that means your $rno is blanck, that is...

ok the error means your query isnt proper. try this: <?php $rno = $_POST["Roll Number"]; $con = mysql_connect("localhost","root",""); if (!$con) { die('Could not connect: ' . mysql_error()); } mysql_select_db("database", $con)...

ok i have added mysql_error() calls to try debuggin where the error is, try out the following code and see what happens: <?php $rno = $_POST["Roll Number"]; $con = mysql_connect("localhost","root","");...

Re: prgraming with java Check out How to Program in Java by Deitel & Deitel, pretty lucid explanations with real life scenarios, pretty in-depth and complete.

i think there is an error in your query string try something like $data = mysql_query("SELECT * FROM result WHERE 'Roll Number' = \"".$rno."\"" );

yea, the technique your friends suggest is quite flawed, for an untampered image may also have a drastic variation, say in brightness if there are some metallic glare

You could be more specific, like in which part you need help? Database connectivity or GUI design?

The most basic thing in an autonomous robot would be a microcontroller (its possible to build completly analog bot too, they are called beam-bots, i guess). So i guess to...

Your problem is quite difficult to solve. Its like trying to measure a physical value without a reference. For measuring anything and making logical sense of it you will need...

I guess it doesnt hurt learnin multiple packages at the same time, cause in a final program you would have used quite a few packages anyways. I found wxpython quite...