Why isnt isset working? Whats wrong with this?

[xFalseProphet]

Hello! This may sound like a stupid question but i have been trying to get this working all day and its driving me crazy.

 

Ive been asked to take over development of this project, he sent me his code and its a little out of date so im trying to update it. Here is what i cant work out.

 

I have this little snippet of code:

if ($page == "showthread"){
	showThread();
} 

There are several more like that, but you dont need a whole list.

 

That code seems to be throwing up this error when i go to that specific page:

Notice: Undefined index: error in .....

 

All well and good, i would usually do this:

if (isset($page) == "showthread"){
	showThread();
} 

Thats fine and dandy, the error goes away. But now, when i go to that page, it redirects me and gives me my error message for a non-existing page.

 

Its really frustrating me. Can you help me fix this little error?

[trq]

isset returns a boolean true or false, so its result will never equal the string "showthread".

 

On top of that, I fail to see how that could possibly have fixed your error. Can you post the original and complete error message?

[xFalseProphet]

Ok i read the errors wrong, they were only showing 'Undefined index: page in...' when there was no page=xxx in the url. Im not sure how to fix that, have you any ideas?

[trq]

Yes, you would fix that by checking the index exists (using isset) within the array before accessing it.

[xFalseProphet]

I fixed it. Thank you