session_start failure

  • cbonwp

    (@cbonwp)


    7 years, 6 months ago

    Hi,

    i’ve recently upgraded to the latest wordpress and php has just been updated to 7.2. Now a session_start on page load fails as follows:
    1.when a user logs in (my code) i call wp_signon which works correctly and i then call session_start and create some session variables – all good, all set up
    2.when the user loads a new page where session_start is called, it fails (this used to work before). So now no access to stored session variables.

    any ideas appreciated,
    thanks in advance,
    clive

Viewing 6 replies - 1 through 6 (of 6 total)
  • Joy

    (@joyously)

    7 years, 6 months ago

    When I do a search for “PHP 7,2 and session”, I get a bunch of results of people with the same problem. Sounds like it’s not WordPress, which does not use sessions.

    Moderator bcworkz

    (@bcworkz)

    7 years, 6 months ago

    It sounds like you may be calling session_start() after page output has started. You can’t do that. It’s just like sending headers or setting cookies has to be done before any output. Not sure why it worked before. I don’t even know if this is the problem, I’m just guessing. Failure could be for any number of problems, cookie failure, failure to pass ID, file system issues, etc.

    Setup a couple simple test pages outside of WP. If these don’t work either, there is some fundamental system failure. If they work, take a hard look at your WP implementation, you’re probably doing something wrong that was formerly tolerated but now fails. Poor coding practice is a common cause of failures after upgrades.

    Thread Starter cbonwp

    (@cbonwp)

    7 years, 6 months ago

    thanks for the replies, definitely not calling session_start after any page output. I’ve just re-instated the old wordpress version and the problem is there too. So suspect is host upgrade to php 7.2.
    Got this message in log file
    [22-Nov-2018 10:57:42 UTC] PHP Deprecated: __autoload() is deprecated, use spl_autoload_register() instead in /customers/e/8/7/saliannefrenchfocus.com/httpd.www/wordpress/wp-includes/compat.php on line 502

    Will investigate later
    thanks again

    Thread Starter cbonwp

    (@cbonwp)

    7 years, 6 months ago

    ok, this autoload change is fixed in wordpress 4.9.8
    just original problem of session_start failing so no access to previously stored session variables

    Umar Draz

    (@itpixelz)

    7 years, 6 months ago

    Hi @cbonwp, you can do your session as following way but keep in mind, if you would like to do anything within your theme pages, then do it in your header.php file before loading any output to the browser, so better if you do it before <html> tag in php so there will be no output before storing any session.

    if(session_id() == '')
     session_start();
    Thread Starter cbonwp

    (@cbonwp)

    7 years, 6 months ago

    hi Umar, i have an init hook on page loads so put a session_start in there – now it all works again! There’s still a session_start within each page but it doesn’t seem to matter – maybe it’s just ignored.
    Don’t quite see at the moment why this glitch appeared.
    thanks, clive

Viewing 6 replies - 1 through 6 (of 6 total)

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