undefined variable

[Tim Streater]

I'm doing something like this:

$PTR_fcc = isset($_POST['PTR_fcc'])==true ? $_POST['PTR_fcc'] : 0;

and possibly (maybe not, depends on some logic):

$PTR_fcc = ($fcco==0 || $mboxid==$inboxid || $mboxid==$outboxid || $mboxid==$junkboxid || $mboxid==$trashboxid) ? 0 : $mboxid;

and then later I do:

$str = "fcc: " . $PTR_fcc;

Now, upon examination it appears that I have an instance where $str ends up as:

fcc: undefined


My question is, under what conditions can a variable be set by the PHP system to the string "undefined"? Would this require that my ajax call in the browser would have to have had something explicit like:

... &PTR_fcc=undefined ...

[Stuart Dallas]

Post by Tim Streater
$str = "fcc: " . $PTR_fcc;
fcc: undefined
... &PTR_fcc=undefined …

Not explicit as such, but that is what’s happening. Javascript will use the string "undefined" whenever an undefined variable is concatenated on to a string.

-Stuart

[Tim Streater]

Post by Tim Streater
My question is, under what conditions can a variable be set by the PHP system
to the string "undefined"? Would this require that my ajax call in the
... &PTR_fcc=undefined 


Not explicit as such, but that is what’s happening. Javascript will use the
string "undefined" whenever an undefined variable is concatenated on to a
string.

Stuart,

Thanks for that - that really narrows down where I need to look.

[Tedd Sperling]

Post by Tim Streater
$PTR_fcc = isset($_POST['PTR_fcc'])==true ? $_POST['PTR_fcc'] : 0;

Try:

$PTR_fcc = isset($_POST['PTR_fcc']) ? $_POST['PTR_fcc'] : 0;

Cheers,

tedd
_______________
tedd sperling
***@sperling.com