Limit on the size of an array in $_SESSION?

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  • Sundial Services
    #1

    Limit on the size of an array in $_SESSION?


    I have an object in the session-data which contains a search-result list.
    It might, at various times, contain 16,000 entries or more.

    I seem to be noticing, however, that when the size of the result-list is
    more than around 1,000 records ... the object simply does not get saved
    into the $_SESSION data at all.

    The PHP memory-limit is 30 megs. I never see any curious output in the
    Apache logs, and the application does not fail. The trouble is simply that
    when the search result is large, and the search-results page enters, it
    finds that there is no search-result object in the session data. For a
    smaller result set, and /identical/ code, the object is there.

    Any ideas?

    Tags: None
    • Chung Leong
      #2
      Re: Limit on the size of an array in $_SESSION?


      "Sundial Services" <info@sundialse rvices.com> wrote in message
      news:cogn7p$te3 $1@domitilla.ai oe.org...[color=blue]
      >
      > I have an object in the session-data which contains a search-result list.
      > It might, at various times, contain 16,000 entries or more.
      >
      > I seem to be noticing, however, that when the size of the result-list is
      > more than around 1,000 records ... the object simply does not get saved
      > into the $_SESSION data at all.
      >
      > The PHP memory-limit is 30 megs. I never see any curious output in the
      > Apache logs, and the application does not fail. The trouble is simply[/color]
      that[color=blue]
      > when the search result is large, and the search-results page enters, it
      > finds that there is no search-result object in the session data. For a
      > smaller result set, and /identical/ code, the object is there.
      >
      > Any ideas?
      >[/color]

      Not enough disk space in the partition where the session data get saved?
      I've tried this and it worked fine:

      session_start() ;
      $_SESSION['test'] = array_fill(0, 32000, "banana");

      Do remember that session data is not stored in memory. It's stored in a
      file, which is read in its entirety for every page hit. Storing that much in
      a session is thus not a very good idea.


        Comment

        • R. Rajesh Jeba Anbiah
          #3
          Re: Limit on the size of an array in $_SESSION?

          Sundial Services <info@sundialse rvices.com> wrote in message news:<cogn7p$te 3$1@domitilla.a ioe.org>...[color=blue]
          > I have an object in the session-data which contains a search-result list.
          > It might, at various times, contain 16,000 entries or more.
          >
          > I seem to be noticing, however, that when the size of the result-list is
          > more than around 1,000 records ... the object simply does not get saved
          > into the $_SESSION data at all.
          >
          > The PHP memory-limit is 30 megs. I never see any curious output in the
          > Apache logs, and the application does not fail. The trouble is simply that
          > when the search result is large, and the search-results page enters, it
          > finds that there is no search-result object in the session data. For a
          > smaller result set, and /identical/ code, the object is there.
          >
          > Any ideas?[/color]

          Was it file based session (default) or custom session? Could you be
          able to open the session file and manually analyze?

          --
          <?php echo 'Just another PHP saint'; ?>
          Email: rrjanbiah-at-Y!com

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