Re: Problem with $GLOBALS

Of more use is probably a description of how things now work. Register Globals represents quite a large security risk to PHP scripts as it allows a visitor to your site to define the value of ANY variable. Instead, there are now a fixed number of "super global arrays". Rather than defining lots of individual variables, all pre-script defined variables are put into one big array. Its easier to understand with an example A user goes to http://mysite.com/index.php?visitorid=10 with register globals, this defines $visitorid as '10' without register globals, the only way to access this data is by using $_GET['visitorid'] The later example is the preferd use, I strongly suggest learning to use it. BTW, you are using the same book I used! I thought it was quite a good one, although since then i've picked a lot up from the php manual and this helplist. $_POST[''] for all post variables - eg <form method="POST"> $_GET[''] for all get variables, that is variables from the url (as above) $_SESSION[''] for all session variables. Sessions have changed a lot since the book was written. Those are the three main ones. I would give you a link to the correct page in the php manual but it appears to be down at the moment! Stephen ----- Original Message ----- From: "Jim George" <jim.george@blueyonder.co.uk> To: "Jennifer S." <jennifer_p_s@yahoo.com.au>; <php-windows@lists.php.net> Sent: Sunday, May 18, 2003 8:26 AM Subject: RE: [PHP-WIN] Problem with $GLOBALS > Jenifer, > > thanks for that, worked beautifully. > > Jim > -----Original Message----- > From: Jennifer S. [mailto:jennifer_p_s@yahoo.com.au] > Sent: 18 May 2003 05:43 > To: Jim George; php-windows@lists.php.net > Subject: Re: [PHP-WIN] Problem with $GLOBALS > > > The book assumes that you have "register globals" set to "on" in your > php.ini file. By default it's off now. Change it to "on" and you should be > OK. > > Cheers, > Jennifer > > > Jim George <jim.george@blueyonder.co.uk> wrote: > Folks, > > I'm a total newbie with PHP and I've been working through "SAMS Teach > yourself PHP in 24 hours". > I got to Hour 9 where they introduced the concept of predefined > variables > and the $GLOBALS variable. Neither of these appear to work generating > all > sorts of errors. > Please find below a listing. Can someone help me please? > Thanks. > > Jim > > > print " > Let's try that loop again > "; > $user1="Harry"; > $user2="Mary"; > $user3="Bob"; > > foreach($GLOBALS as $key=>$value){ > print "\$GLOBALS[\"$key\"] == $value"; > } > ?> > > > > > -- > PHP Windows Mailing List (http://www.php.net/) > To unsubscribe, visit: http://www.php.net/unsub.php > > > > > > > -------------------------------------------------------------------------- -- > -- > Yahoo! Mobile > - Check & compose your email via SMS on your Telstra or Vodafone mobile. >