Re: Legal $_SESSION names

At 4:52 PM +0100 5/22/09, Ashley Sheridan wrote:

On Fri, 2009-05-22 at 11:30 -0400, tedd wrote:

Hi gang: While we're discussing what's legal in css, here's a couple of things I've found about sessions. I found that starting a session with a number doesn't work. $myvar = $_SESSION['1myvar']; I also found that dumping a session to a variable with the same name may cause problems, such as:

$myvar = $_SESSION['myvar'];

Regardless of what anyone may say to the contrary, it doesn't work everywhere. I found that out the hard way. The fix is simply to use a different name for the variable, such as: $my_var = $_SESSION['myvar']; Hopes this help someone. Cheers, tedd -- ------- http://sperling.com http://ancientstones.com http://earthstones.com

The second case won't work if you have register globals turned on I believe, as it will attempt to create $_SESSION['myvar'] as $myvar. I believe that RG might have something to do with the first as well. I seem to remember a thread a while back talking about sessions not being able to use numbered indexes because they are a special super global. Ash www.ashleysheridan.co.uk

Ash: You are right, but here's the rub -- when you have register globals turned on and you use: $myvar = $_SESSION['myvar']; This sometimes works and sometimes fails. I had an entire site where I had been using the same names for attributes and variables throughout and suddenly one page didn't work. All other pages worked just fine, but this single page didn't. I searched high and low for an answer and found a vague reference where someone else had run into a similar problem and found the solution was to change the variable name. So I did with that single page and everything worked. Why did that single page not work and everything else did? I haven't a clue, but I will say that I reduced the problem to that specifically and that *was* the problem. Additionally, why was that problem not realized in the other pages on the same site -- I don't know, but this was an example of "sometimes it works, and sometimes it doesn't" -- a heck of a way to run a railroad. Cheers, tedd -- ------- http://sperling.com http://ancientstones.com http://earthstones.com