Question

Basicly I have a bunch of links on a page and I will use something like this

<?PHP echo $SITE_PATH ?>

Many many times on the same page but it will show a Notice in PHP for doing so.

I know you are supposed to use things like isset() but would I really need to use it every time I call?

<?PHP echo $SITE_PATH ?>

— EDIT :
If I switch to using a defined variable, then the notices seem to go away

Answer 1

Two solutions, here :

• only use variables that exist — which is what you should probably do.
• or test if they exist (with isset) before trying to use them.

There is no magic ^^

If your application is using many not-set variables, you probably have some problem in your design.

In a case such as the one you presented, for a variable that’s used lots of times, I would make sure it exists, and, if not, set it to ”, for instance, at the beginning of my script.

That’s not really looking great, but it’ll work — and, this way, you won’t have to go through your whole application, patching everything.

(Or I might also disable the E_NOTICE error_reporting level — I don’t like that idea, but, sometimes, it’s really the only way to deal with some code base)