In PHP 4.1.0 or greater, all you need to use sessions is this:
<?php
session_start(); // this tells the script to either create a session
// or to use a current session if the script has been
// passed a session ID via a cookie or GET request
$_SESSION['var1'] = $varablename;
// this tells the script to take the value of the
// "variablename" variable and assign that to the
// "var1" variable, which is a session variable.
$_SESSION['var1'] = $_POST['var1'];
// this tells the script that the user-supplied value
// contained by the "var1" variable from a POST request
// (usually from a HTML form) should now be contained by
// a session variable called "var1".
echo $_SESSION['var1'];
// this does exactly what you think it does, and of
course
// this variable can be manipulated in other ways.
echo()
// is just an easy example.
Since the $_* variables are always global (hence the name
"superglobals"), you never need to worry about the scope of these
variables. And you never need to use session_register() again. All of
the above code is register_globals=off-compliant.
Erik
On Thursday, March 14, 2002, at 04:36 PM, Donna Dufort wrote:
> I'm attempting to understand how to use session variables with
> register_globals off. Listed below are three very simple pages that
> pass
> session variables.
>
> ====>>>With register_globals off:
> I'm only able to see $ses_var1 if I refer to it with
> $HTTP_SESSION_VARS['ses_var1'] or
> $_SESSION['ses_var1'] and not by using $ses_var1. This only works if I
> used
> session_register('ses_var1') then set it using
> $ses_var1 = "something";. Per everything I've been reading I expected
> it
> to work more like how I have ses_var2 setup but ses_var2 only produces
> output on page1.php
>
> Also I didn't expect $HTTP_SESSION_VARS['ses_var1'] to return anything
> since
> I did not declare them as global in page2 or page3.
>
>
> ====>>>With register_globals on:
> Same results as above except $ses_var1 does produces output on any page
> that
> asks.
>
>
> Am I doing something wrong?
>
> Using Windows 2k/IIS, we are also using Linux and Apache but we haven't
> upgraded that machine yet.
>
> =================
> page1.php
> =================
> session_start();
> session_register('ses_var1');
>
> $ses_var1 = "Hello World";
>
> $_SESSION['ses_var2'] = "huh?";
>
> echo "\$ses_var1 is ".$ses_var1;
> echo "<br>";
>
> echo "\$_SESSION['ses var2'] is ".$_SESSION['ses_var2'];
> echo "<br>";
>
> ?>
> <center>
> <br><br><br><br><br>
> <form method=post action="page2.php">
> <table bgcolor=#cccccc>
> <tr>
> <td>Username:</td>
> <td><input type=text name=username></td></tr>
> <tr>
> <td><input type=submit value="submit"></td></tr>
> </table></form>
> </center>
>
> =================
> page2.php
> =================
> session_start();
> echo "\$HTTP_SESSION_VARS['ses_var1'] is
> ".$HTTP_SESSION_VARS['ses_var1'];
> echo "<br>";
>
> echo "\$_SESSION['ses_var1'] is ".$_SESSION['ses_var1'];
> echo "<br>";
>
> echo "\$ses_var1 is ".$ses_var1;
> echo "<br>";
>
> echo "<br>";
> echo "<hr>";
>
> echo "\$HTTP_SESSION_VARS['ses_var2'] is
> ".$HTTP_SESSION_VARS['ses_var2'];
> echo "<br>";
>
> echo "\$_SESSION['ses var2'] is ".$_SESSION['ses_var2'];
> echo "<br>";
> echo "\$ses_var2 is ".$ses_var2;
> echo "<br>";
>
> echo "<br>";
> echo "<hr>";
> echo "post var name is: ".$_POST['username'];
> echo "<br>";
>
> ?>
> <a href = "page3.php">Next page</a>
>
>
> =================
> page2.php
> =================
> session_start();
>
> echo "\$HTTP_SESSION_VARS['ses_var1'] is
> ".$HTTP_SESSION_VARS['ses_var1'];
> echo "<br>";
>
> echo "\$_SESSION['ses_var1'] is ".$_SESSION['ses_var1'];
> echo "<br>";
>
> echo "\$ses_var1 is ".$ses_var1;
> echo "<br>";
>
> echo "<br>";
> echo "<br>";
>
> echo "\$HTTP_SESSION_VARS['ses_var2'] is
> ".$HTTP_SESSION_VARS['ses_var2'];
> echo "<br>";
>
> echo "\$_SESSION['ses var2'] is ".$_SESSION['ses_var2'];
> echo "<br>";
>
> ?>
> <a href = "page1.php">Return to Page 1</a>
>
>
>
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----
Erik Price
Web Developer Temp
Media Lab, H.H. Brown
[EMAIL PROTECTED]
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