Quick sql question

[imati0n]

 $sql = 'INSERT INTO `members` ( `id` , `PASSWORD` , `username` ) VALUES ( '?', '$password', '$username' ); '; 

Where the ? is, I want to make it so whenever a user registers, it runs this code and the id goes up automatically (AUTOINCRIMENT or something to that effect)

Could someone show me how this is possible?

[Huscy]

$sql = 'INSERT INTO `members` ( `id` , `PASSWORD` , `username` ) VALUES ( '', '$password', '$username' ); ';

[Huscy]

presuming you have the id field set to auto inc?

[imati0n]

Thanks a lot =D