某些会话变量在页面之间变为空/空

Question

Something odd is going on. I have been testing a web application on my local machine and it works perfectly fine. Session's are being handled perfectly.

Recently, when I promoted the application to production, everything works well except the some of the session variables not being saved between pages.

It seems like all of the newly created session variables that I have added to the application are NOT being saved between pages and all the ones that already existed before the changes were made, ARE being saved between pages.

I was thinking maybe it has something to do with the php.ini or some security setting perhaps? What makes this hard for me to troubleshoot is that SOME but not all SESSION's are being lost between pages.

The 1st page nav contains all SESSION vars as needed, 10 session vars. All of the new vars that were created and saved on the first page become null / empty on the any page other than the first and the number of SESSION vars drops to 9.

I greatly appreciate any advice on what is causing this problem and how to troubleshoot this problem!

NOTE: the last four variables are newly created, all others have existed before the new changes.

Page Nav 1:

echo 'ID: ' . session_id() . ' <br/><br/>';
        echo 'SAVE PATH: ' . session_save_path() . ' <br/><br/>';
        var_dump($_SESSION);

Output

ID: 8rd3paua61caaqd09ahoc0km42

SAVE PATH: D:\php5\session

array(10) { ["termstamp"]=> int(1383577150) ["timestamp"]=> int(1383577150) ["tm"]=> int(1383577150) ["userid"]=> string(6) "153355" ["authenticated"]=> bool(true) ["auth"]=> bool(true) ["joinMeta"]=> string(0) "" ["selectMeta"]=> string(0) "" ["search_queryyy"]=> array(12) { [0]=> string(27) "sec.lastname LIKE '%smith%'" [1]=> string(0) "" [2]=> string(0) "" [3]=> string(0) "" [4]=> string(0) "" [5]=> string(0) "" [6]=> string(0) "" [7]=> string(43) "sec.has_status != 99 && sec.has_status != 6" [8]=> string(0) "" [9]=> string(0) "" [10]=> string(0) "" [11]=> string(0) "" } ["testtttttt"]=> string(17) "SOMETHING INTO IT" }

Page Nav 2 and greater:

echo 'ID: ' . session_id() . ' <br/><br/>';
        echo 'SAVE PATH: ' . session_save_path() . ' <br/><br/>';
        var_dump($_SESSION); 

Output:

ID: 8rd3paua61caaqd09ahoc0km42

SAVE PATH: D:\php5\session

array(10) { ["termstamp"]=> int(1383577150) ["timestamp"]=> int(1383577150) ["tm"]=> int(1383577150) ["userid"]=> string(6) "153355" ["authenticated"]=> bool(true) ["auth"]=> bool(true) ["joinMeta"]=> string(0) "" ["selectMeta"]=> string(0) "" ["search_queryyy"]=> NULL ["testtttttt"]=> string(17) "SOMETHING INTO IT" } 

Thanks in advance!

Answer 1

Have you considered storing these values in input type="hidden" fields as a backup plan?

Work on a variation from this, perhaps this will push you in the right direction and see where it goes wrong.

<?php
    foreach ($_SESSION as $key=>$value)
    {
?>
       <input type="hidden" name="<?php echo $key; ?>" value="<?php echo $value; ?>" />
<?php
    }
?>

Note: Code untested and will probably not work, but you get the picture...

Answer 2

如果会话变量在一个页面上而不在其他页面上运行，则意味着（很可能）您在其他页面上缺少session_start（） 。