Session not retaining value after every page refresh

Question

<?php
session_start();
print_r($_SESSION);
if(empty($_SESSION['a'])) {
    $_SESSION['a'] = mt_rand();
}

print_r($_SESSION);
?>

The code is placed on page1.php and after every page refresh the variable 'a' value is being set again and again. Whats the problem with the above code?

how are the php ini settings file of your production project? — Yehia Awad, Feb 01 '16 at 12:49
@shashikant the above code is working fine on local with empty and also working with !isset. — Mohammad Sharaf Ali, Feb 01 '16 at 12:52
@яша other websites are running with the same ini settings and with the above code and working well. — Mohammad Sharaf Ali, Feb 01 '16 at 12:53
@SURFER-TM I think in live some where you have put blank line or HTML code that's way you code not working in live. — Jalpa, Feb 01 '16 at 12:57
!isset($_SESSION['a']) && empty($_SESSION['a']); or try array_key_exists('a',$_SESSION) && !empty($_SESSION['a']) Please refer this for more info http://stackoverflow.com/questions/1519818/how-do-check-if-a-php-session-is-empty — Shashikant Chauhan, Feb 01 '16 at 12:58
@Jalpa I have just upload one page on the live server for testing no online 3 lines of code. So no point of whitespace :-) — Mohammad Sharaf Ali, Feb 01 '16 at 13:00
@яша Yes the above code is included in all the pages. But for the sake of testing I have created an empty php page with just the above code in it and its not working. So what's the problem with it? — Mohammad Sharaf Ali, Feb 01 '16 at 13:01
add this to your code phpinfo(); and see the session.save_path variable — Yehia Awad, Feb 01 '16 at 13:09
Let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/102245/discussion-between--and-surfer-tm). — Yehia Awad, Feb 01 '16 at 13:09

score 0 · Answer 1 · answered Feb 02 '16 at 07:58

0

The problem was with the php file encoding system. I opened the php file in latest notepad++ version and checked the "Encoding" and it was UTF-8 with BOM and I changed it to just UTF-8. And wolla it worked like a charm :-)

answered Feb 02 '16 at 07:58

Mohammad Sharaf Ali

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score 0 · Answer 2 · answered Feb 02 '16 at 07:59

0

This is the issue of Encoding. Please open your file on notepad++ new version and set file into Encoding in UTF-8. I hope your issue will be fix :)

answered Feb 02 '16 at 07:59

okconfused

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score -1 · Answer 3 · edited May 23 '17 at 12:15

-1

see this answer.

It says that you need to set proper read/write privileges to the php/webserver process' user.

Make sure that the /var/lib/session/ directory is readable/writable for www-data.

edited May 23 '17 at 12:15

Community

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answered Feb 01 '16 at 13:12

Caleb Lewis

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Session not retaining value after every page refresh

3 Answers3