Re: Legal $_SESSION names

On Fri, 2009-05-22 at 12:01 -0400, tedd wrote: > 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 > It's an odd one, no doubt about that! Ash www.ashleysheridan.co.uk