session vars and reload(refresh)

harte4

I have two files file1.php and file2.php. File2 draws an image. File1 builds a page using the image drawn by file1. File1 can be called from links on the resulting page. ie it calls itself. I have session vars(arrays) defined and they are functioning, but with a twist..

file1.php
<?php
session_start();
require_once("vars.php");
some code stuff..
print("<img src=file2.php.......");
some more stuff;
print("<a href="file1.php.........")
print("Val = %s",$_SESSION['test'][0]); // check val in array
?>

file2.php
<?php
session_start();
code to draw image fills in test[0] etc;
example: $SESSION['test'][0] = "All done #7";
print("Val = %s",$SESSION['test'][0]); // check value
?>

vars.php
<?php
$test = array(0=>1, 10=>10);
include_once ("file2.php");
some other vars not session related..
?>

The page generated is correct only after I do a reload (refresh). The browser cache control is check page at every view and I have tried setting session_cache_limiter('nocache'). If I dump $SESSION in file2, vars are correct. However if I dump $SESSION in file1 after img src call, the vars reflect the previous pass of the page. Any insight welcome..

Thanks..
🙂

jpmoriarty

well it's difficult when the bit that you're apparently having difficulty with you then helpfully leave out of your code altogether - there's no reference to sessions at all in that code. so it could be a problem with where you're defining them, how you're defining them, anything - but you've not given us enough information to be able to help.

harte4

Sorry about the omission.. I was assuming that the problem could not be related to that since I had tried so many different declaration combinations.. Well, I know what happens when I assume. Hope the additional info show where variables are declared and when session_start called will help..

jpmoriarty

i dont see you registering your session variables anywhere:

$variable = "THIS VALUE";
session_register['variable'];

you cant set a session variable by doing:

$_SESSION['variable']= "THIS VALUE";

As far as im aware those are effectively "read-only": you can refer to them to see what's in them, but you have to use session_register() to write to them.

harte4

Immediately after the include line in vars.php I have a line that reads session_register("test"); I have commented and uncommented this line.. Makes no difference, and in pouring thru some of the other posts on session issues, I came to the conclussion that it's not needed.. I have also edited file2 to not update the $_SESSION vars in file2, reloaded the page and find the new values show up in file1...

harte4

In reading thru the documentation, it appears that the system locks the session variables to file1 after file2 starts executing and will not unlock them to file1 until file1 script ends. As a result, when I do the reload I get the correct values. I have verified this by doing no processing in file2 and executing the reload. Does anyone know of a way around this issue, I would like access to the file2 updated session variables after file2 completes, but before file1 ends.. Don't want to say "Please reload page for accurate info"..

Thanks guys..🆒

rubyaryat

Did you find a solution to this?
I'm having a similar problem.

harte4

Sorry, I could not solve the problem directly (could not pass the updated vars), so I performed the calculations a second time in file2 and generated the vars. A bit of duplication, but it worked for me....