sessions

[maccherons]

I have a problem with session. If I use session variables in two scripts and I go ahead and back changing this values, the browser seems always to remember the first values assigned.
Look, what's worng in this scripts?

provases1.php:
<?php
session_cache_limiter("nocache");
session_start();
if(!session_is_registered("errori")){
session_register("errori");
$HTTP_SESSION_VARS["errori"];
}
$HTTP_SESSION_VARS["errori"]++;
echo $HTTP_SESSION_VARS["errori"];

echo "<a href=\"provases2.php\">back</a>";
?>

provases2.php:
<?php
session_cache_limiter("nocache");
session_start();
$HTTP_SESSION_VARS["errori"]++;
echo $HTTP_SESSION_VARS["errori"];

echo "<a href=\"provases1.php\">back</a>";
?>

I wanted to have numbers incrementing everytime push the link "back". Without the cache limiter values bounce between 1 and two. With cache limiter only provases1.php increments the value. Why?

[yelvington]

Read the manual page for session_is_registered().

[maccherons]

you're right. I was trusting like an idiot a book on web developing, but I didn't see it was not up to the version of php I used. Now all works fine.

Thanks a lot

[yelvington]

With Netscape 6/7 or Mozilla, you can set a keyworded bookmark to http://www.php.net/%s, which makes checking the manual a snap. Since PHP is a moving target in certain areas (sessions, object support, and even the mysql interface) it's much better to check the online manual than a book. The comments are better, too.

[maccherons]

indeed I'm quite new to this language and I think I've learned the lesson with days spent complaining about misterious mistakes I couldn't find