Create/Update Php Session with Javascript

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  • ANTISPAM_garycnew_ANTISPAM@yahoo.com
    #1

    Create/Update Php Session with Javascript

    I am trying to create/update a Php Session with Javascript to confirm
    if users have Javascript enabled.

    My first thought was to create a Javascript that writes a script tag
    referencing a php page, which sets a $_SESSION variable.

    javascript.js:

    <script type="text/javascript">
    <!--//
    document.write( '<s'+'cript type="text/javascript"
    src="javascript .php"></s'+'cript>');
    //-->
    </script>

    javascript.php:

    <?php
    session_start() ;
    $_SESSION['javascript'] = 'enabled';
    ?>

    I can see that both the javascript.js and javascipt.php files are
    executing from the web logs, but when I try to query the
    $_SESSION['javascript'] variable from another page $_SESSION is empty.

    Is it possible to create/update a Php Session with Javascript?

    Might it be done using URLEncoded URL, Javascript XMLHttpRequest, or
    something of the like?

    Thank you for your assitance.

    Respectfully,


    Gary

    Tags: javascript $_session, _session javascript
    • Bart Van der Donck
      #2
      Re: Create/Update Php Session with Javascript

      ANTISPAM_garycn ew_ANTISPAM@yah oo.com writes:
      [color=blue]
      > I am trying to create/update a Php Session with Javascript to confirm
      > if users have Javascript enabled.[/color]

      Uncle Google is your friend:

      Error 404 (Not Found)!!1
      http://groups.google.com/group/comp.lang.javascript/search?group=comp.lang.javascript&q=check+javascript+enabled


      --
      Bart

        Comment

        • Ian B
          #3
          Re: Create/Update Php Session with Javascript

          <html>
          <head>
          <title> Best way I know is... </title>
          </head>
          <body>
          <?php
          if(isset($_GET['js']))
          {
          echo "JS is on";
          //
          // Code for JS on
          //
          }
          else
          {
          echo "
          <form name='testjs'>
          <input type='hidden' name='js' value='on'>
          </form>
          <script>
          <!--
          document.testjs .submit()
          //-->
          </script>
          ";
          echo "JS is off";
          //
          // Code for js off
          //
          }
          ?>
          </body>
          </html>

            Comment

            • Chung Leong
              #4
              Re: Create/Update Php Session with Javascript

              Try doing something like this in javascript.php to see if you have the
              right session id:

              echo "alert('$sessio n_id');";

                Comment

                • ANTISPAM_garycnew_ANTISPAM@yahoo.com
                  #5
                  Re: Create/Update Php Session with Javascript

                  Here's the solution:

                  /includes/meta.php

                  <?php session_start() ; if (!$_SESSION['javascript']) { ?><script
                  type="text/javascript" src="/js/javascript.php" ></script><?php } ?>


                  /js/javascript.php

                  <?php
                  session_start() ;

                  if (($_COOKIE['PHPSESSID']) || ($_GET['PHPSESSID'])) { ?>
                  <!--//
                  document.write( '<s'+'cript type="text/javascript"
                  src="/includes/javascript.php? PHPSESSID=<?php if
                  ($_COOKIE['PHPSESSID']) { echo $_COOKIE['PHPSESSID']; } else { echo
                  $_GET['PHPSESSID']; } ?>"></s'+'cript>');
                  //-->
                  <?php } ?>


                  /includes/javascript.php

                  <?php
                  session_id($_GE T['PHPSESSID']);
                  session_start() ;

                  $_SESSION['javascript'] = 'enabled';
                  ?>

                  The meta.php script is a global include file that initiates a request
                  to js/javascript.php if the $_SESSION['javascript'] variable is not
                  found.

                  The js/javascript.php script then executes a javascript initiated
                  request to the includes/javascript.php script using the PHPSESSID
                  variable and updates the user's php session $_GET['PHPSESSID'] with
                  $_SESSION['javascript'] = 'enabled';

                  It does have a short coming in that the first loaded page will not show
                  that $_SESSION['javascript'] is set. Only pages loaded after the
                  initial page will be usefull.

                  Hope this helps someone else.

                  Respectfully,


                  Gary

                    Comment

                    • Jim Michaels
                      #6
                      Re: Create/Update Php Session with Javascript

                      <body>
                      <script language=javasc ript>
                      window.location .href="mypage.p hp?js=on";
                      <script>
                      <noscript>
                      <a href="mypage.ph p?js=off">click here to continue</a>
                      <noscript>
                      </body>
                      I am new to sessions, do somewhere in the code you wuold need to insert the
                      session stuff.

                      "Ian B" <ianbambury@gma il.com> wrote in message
                      news:1134647910 .968633.6220@g4 4g2000cwa.googl egroups.com...[color=blue]
                      > <html>
                      > <head>
                      > <title> Best way I know is... </title>
                      > </head>
                      > <body>
                      > <?php
                      > if(isset($_GET['js']))
                      > {
                      > echo "JS is on";
                      > //
                      > // Code for JS on
                      > //
                      > }
                      > else
                      > {
                      > echo "
                      > <form name='testjs'>
                      > <input type='hidden' name='js' value='on'>
                      > </form>
                      > <script>
                      > <!--
                      > document.testjs .submit()
                      > //-->
                      > </script>
                      > ";
                      > echo "JS is off";
                      > //
                      > // Code for js off
                      > //
                      > }
                      > ?>
                      > </body>
                      > </html>
                      >[/color]


                        Comment

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