php4 : how can I keep my variables between scripts ?

dauminolivier

I can't keep my variables from a script to another one.
global regoster is set off on the server, so i try the sessions functions : it does not work on the production server (archicool.net) but the same scripts works on the server of free.fr !

how can I do or does exist another method to do that ?

thanks in advance for your help...
OD

laserlight

Well, if you dont use sessions, you could sent it by the query string, or if it is a form, use the POST method.
You could use cookies, or store values in a database.

dauminolivier

Do you have info about "query string" ?
The post method does not work too, or something is wrong... but I do not see what...
😮( I loose several hours on the problem, please help me !

mogster

Do you use the var specification for globals off in the receiving scripts?

For post:
$_POST['variable']

For get:
$_GET['variable']

For cookie:
$_COOKIE['variable']

knutm

dauminolivier

I have tried each method found on "php.net" website, without succeed...
I am desappointed !
I may work because we have also SPIP on the server using php etc...

So I do not understand. Do you have a working example for a server with the same parameters ? (see my first post)

kubik

hey there ... i just had the same problem and the friendly folks here helped me out with this ...

1. pass along "$var" from "script.php" to page "whatever.php":

<?php
// code stuff
//
header ("Location: whatever.php?var=$var");
?>

if you have multiple vars to pass along, use this instead:

header ("Location: whatever.php?var=$var&var1=$var1");

2. this will show up in address bar of page "whatever.php" as:

www.domain.com/whatever.php?var=8 //(8 is an example here, can be anything)

3. to grab it from the address bar in page "whatever.php" and pass it on to the next script (form method using GET, not POST) include this with the form:

<input type="hidden" name="var" value="<? echo $var; ?>">

then jump back up to "1.", include this code to grab $var and loop this as often as needed 🙂

<?php
$_GET['var'];
// code stuff
//
header ("Location: whatever.php?var=$var");
?>

hth + cheers, 🙂

kubik

mogster

Yes, but you must describe in more detail what you're trying to accomplish.

Are you posting some vars from a form to a script? Or will you make some vars sticky, so that they remains even when the post-var is empty?
Your first post indicates the latter, but I'm not sure 😃

If you want them to be sticky, one method is to use cookies, like this:

<?PHP
if(empty($_COOKIE['uname']) && empty($_GET['uname'])) {
$the_name = "hank";
setcookie("uname", $the_name);
header("Location:".$_SERVER['PHP_SELF']."?uname=$the_name");
}
?>

On the header redirect, the cookie-value should be set (if the browser support cookies), and you may print the name like this:

<?PHP
if(!empty($_GET['uname'])) {
if(!empty($_COOKIE['uname'])) {
$printname = $_COOKIE['uname'];
echo "You are $printname and your browser support cookies!";
} else {
$printname = $_GET['uname'];
echo "You are $printname but your browser don't support cookies!";
}
}
?>

With a bit of luck, this code should not produce any parse-errors :p

[edit]Well, nearly... 😃 [/edit]

[edit2]And you'll need to specify php-self in CAPITAL letters, else Opera 6 won't understand a thing... Ah - poor, poor Opera...[/edit2]

knutm

dauminolivier

yes, this method works often, but not on the server I use because the security 'global register' is set off.

So, send parameters by the url do not work...

What I want to do is to use a form to have user's informations like login and password. Then, using these data, I want, in another script, find the user in a MySql database (this part work).
I don't suceed in keeping data grapped by the user...

mogster

The url (GET) vars is still available on servers with globals to off?
Just use $_GET['variable'] to access/specify it.

knutm - the king of parse errors 😃

mogster

On servers with globals to on:
Url: http://my.com/index.php?var=works

PHP in script:

echo $var;

On servers with globals to off:
Url: http://my.com/index.php?var=works

PHP in script:

$var = $_GET['var'];
echo $var;

knutm 😉

dauminolivier

When you use $_GET['***'] to pull the data, what do you use to push it from the first script or the form ?

The different tests I do are not working 😕

mogster

Well, you could use form method=GET, I suppose.

But if you're gonna use a GET'ed loginform, this is not recommendable (easier to brute-force).

The process you're trying to make work is:
- post a form with login data
- find the response in mysql
- keep the user logged in by making the logindata stick

Right?

What you want to do is to POST the data (form method=POST), to the receiving script.
Every POST'ed var must be "collected" in that script with:
$username = $POST['username'];
$password = $POST['password'];

Now these vars is available just as they were with globals=on.

Then do the mysql-bit to find the response, and do the comparison.
If true, set a cookie as specified above.
If false, just include the login-form again.

When the cookie values are set, they will always be available in every script you make as the values:
$COOKIE['username'];
$COOKIE['password'];

You'll probably want to make a separate mysql-comparison that runs every time any auth-page is loaded, to recheck the cookie-data against their mysql equvivalent.

knutm

dauminolivier

file1.php : enter a data

<? 
echo "<html><body>"; 
echo "<form method=post action=file2.php"; 
echo "<table><tr>"; 
echo "<td>User: </td><td><input type=text name=user></td>"; 
echo "<td colspan=2><input type=submit value=\"Submit\">"; 
echo "</tr></table>"; echo "</body></html>"; 
?>

file2.php : should see the data entered and echo it, but not work...

<? 
$user=$_POST['user'];
if (!$user) {
  echo("Error! Variable not found ?"); 
  exit(); 
}
else { 
  echo "<html><body>"; 
  echo "User: $user"; 
  echo "</body></html>"; 
}
?>

That's why i do not understand... The problem is that I have no more solution to do that !

OD 🙁

mogster

You're not closing the form-tag in the html:

<? 
echo "<html><body>"; 
echo "<form method=post action=file2.php"; 
echo "<table><tr>"; 
echo "<td>User: </td><td><input type=text name=user></td>"; 
echo "<td colspan=2><input type=submit value=\"Submit\">"; 
echo "</tr></table>"; 
echo "</form>";
echo "</body></html>"; 
?>

Could it be so easy as that?

knutm 😃