what does this error >> PHP Notice: Use of undefined constant submit,means??[help!!]

i am inserting data from the user input into the database. the database that i am using is ms sql. but i got an error which i dont understand. this is the error >>>> PHP Notice: Use of undefined constant submit - assumed 'submit' in C:\Inetpub\wwwroot\VisitorSurvey.php on line 38.

what does this error mean? n how can i solve this error problem?

 

its hard to say without seeing the code around the lines that the error is reporting..

 

you're using an undefined constant, as simple as that.
either define() it or check if you're missing a $ behind a variable, making the interpreter think it is a constant.

 

As above - although additionally if you're accessing an associative array using a key, this needs to be in quotes. I.e. rather than $_POST[submit] you must use $_POST['submit'].

 

Yeah, rodney88's on the right track... I would guess it's an unquoted string somewhere that is then assumed to be a constant which is undefined.