SOS! PHP GEt/POST/Session Variables Changes for Higher Version!

wanda46

I wrote some codes on a PHP 4.1.2 version server. When I tried move these codes to a PHP 4.2.3 version server... I found I could not pass post, get and session veriables from page to page.

I have to do this for every variable I defined, such as
$id=$_GET["id"];

There will be huge amount of work to do!!! I wonder if there is an easier way to handle that... for example, write a function and include this function in every file?

Thanks for you input!

TruckStuff

You can turn register_globals on in your php.ini file or you can write your code properly the first time. 🙂

matt_4013

or you can write something like this:

foreach($_REQUEST as $k=>$v) {

$$k = $v;
}

And include that at the head of all your files, which will effectively emulate register globals if you can't get it turned on.

chaosdivine

You should really read this article on register_globals before PHP version 4.2
(thats you... 🙂 )

For those of you who like to type in URL's:

http://www.sitepoint.com/article.php/758

OR for those of you who like to click on links:

Click Me

I too had these problems until I got it straight. (variablename is only used here for demo purposes, you need to change it according to your needs.)

Generally you will need to use
$variablename=$GET['variablename'];
or
$variablename=$POST['variablename'];
or
$variablename=$_REQUEST['variablename'];

REQUEST is the best as it handles both POST and GET type methods of passing the variables.

You can also use this if posting variables to the same PHP page itself. (PHPSELF)

$variablename = $_SERVER['SCRIPT_NAME'];

So my PHP page can still access its data, I have had to add two variables in my own script to get it to work...this is just an example of how I did it:

$page = $GET['page'];
$limit = $GET['limit'];

Hope this helps you out...

Drew

dalecosp

There's a load of hacks for this situation.

You can put a php_ini directive in an .htaccess file, or in the <VirtualHost> container in httpd.conf on apache....

You can use the foreach trick above. I think if you use foreach $GLOBALS instead of $REQUEST, you'd catch the SESSION and SERVER arrays as well....

I've seen others, I think. Read the article. Anyone who takes time to post two links is a great friend.

Lastly, take on the chore of slowly weaning your scripts away from globals=on. For the good of everyone. BTW, PHP is now at 4.3.1, FWIW.... 🙂

[EDIT]OOh, my mistake. Chaosdivine, if "automagically parse URL's" is checked (and it is by default on each post), then there's no need to seperate 'clickable links' from URLs....they come out as links anyway....[/EDIT]

ignition

thanks guys

after banging my head for several days on this matter this psot made everything crystal clear.

I had read varioud articles and the manual and asked on forums, but only now does it make sense.

A common (I hope) mistake I was making was assuming that if my form POSTED variable I would retrieve them with $GET['variable']. if you POST thwe varaible you retrive it with $POST or even better $_REQUEST.

dalecosp

Actually, for security's sake, take finegrained control of your data. If the data is POSTED, use $POST. If is passed via the URL, use $GET. Now, I'm not sure what would happen if your form POSTED but you use $_REQUEST and some dude put a var in the URL just, say, for fun, but why take chances? Prolly somebody knows which would take precedence, or I could just RTFM, but I need to go....

You really should not code too casually. Just remember, the major point of register_globals=0 is security.... 🙂

BTW, welcome to PHP-Builder!