If you try and use $var in an operation ( i.e.  .=   <    == etc) and you
get an error saying "Undefined variable" then isset($var) = FALSE


"Erik Price" <[EMAIL PROTECTED]> wrote in message
> Hm.  I hope I'm not opening an old wound:
> Curious about the proper way to test for the existence of a variable, I
> decided to read up on isset() at php.net's function manual pages.  It
> seems at first to be a way to test whether or not a variable has been
> set.
> But reading the annotations below the documentation is mind boggling.
> Back and forth, it seems to go -- and then to find out that one method
> is to be used to test for POSTed variables, and another to be used for
> GETted variables (for $_POST, use "$_POST['var'] !='' ", and for $_GET,
> use "!isset($_GET['var'])").
> Pretty confusing.  Can anyone shed some light on whether or not there is
> a final definite way to do this?  I've used (!($_POST['var'])) with no
> problems in the past, but does good coding style suggest that I use
> (!isset($_POST['var'])) now?
> Erik
> ----
> Erik Price
> Web Developer Temp
> Media Lab, H.H. Brown

PHP General Mailing List (http://www.php.net/)
To unsubscribe, visit: http://www.php.net/unsub.php

Reply via email to