More input on this
Each time i dont have to write $_GET[x]
instead want make $varx=$_GET[x]
Can we do this and apply $varx
by j_limboo: n/a
Yes you can do that.
However, you should check any querystring ($_GET) variables as they can be messed up - i.e. an user could write his/her own values. If you rely on users' goodwill to not try and break your code, you'll find that users WILL break your code.