php select problem...

First thing...
if sql code is not working then wants to see the output then first go to php directory and from command line say some thing like this:

php.exe

this will through the error and u can fix it accordingly...
if we call from browser then there is no way to find the error message..

second is:
Use "" quotes while forming html string and '' while forming sql string.
i am not sure if this is the rule that should be followed to fix my problem but this is the way it works...

SJ