scope over multiple pages

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  • Jeff Sandler
    #1

    scope over multiple pages

    I need to preserve some values over several pages. I want the user to
    enter his username, password and the IP address of the MySQL server at
    the beginning of a series of pages. I want all the pages to know these
    values. I want all the pages to display these values so the user can
    change them or not.
    The "series" of pages is an HTML page that gathers this information.
    This is sent to a PHP server page. The server page may have to re-load
    itself if the user chooses to re-sort the data. If I had it the way I
    want it, the username, password and IP would be gathered in the HTML
    page at the beginning and be available to the server page even when it
    re-loads itself. I also want the HTML page (if visited again) to
    display the original values in the text boxes.
    I have tried $_POST, hidden variables within forms, $GLOBAL (which I
    couldn't get to work at all) and probably some other ways to do this.
    Needless to say, I couldn't get the results I wanted from any of these.
    HELP!

    Tags: None
    • Pedro Graca
      #2
      Re: scope over multiple pages

      Jeff Sandler wrote:[color=blue]
      > I need to preserve some values over several pages. I want the user to
      > enter his username, password and the IP address of the MySQL server at
      > the beginning of a series of pages. I want all the pages to know these
      > values. I want all the pages to display these values so the user can
      > change them or not.
      > The "series" of pages is an HTML page that gathers this information.
      > This is sent to a PHP server page. The server page may have to re-load
      > itself if the user chooses to re-sort the data. If I had it the way I
      > want it, the username, password and IP would be gathered in the HTML
      > page at the beginning and be available to the server page even when it
      > re-loads itself. I also want the HTML page (if visited again) to
      > display the original values in the text boxes.
      > I have tried $_POST, hidden variables within forms, $GLOBAL (which I
      > couldn't get to work at all) and probably some other ways to do this.
      > Needless to say, I couldn't get the results I wanted from any of these.
      > HELP![/color]

      :-))

      Use session variables.

      <?php // page1.php
      session_start() ;
      $name = isset($_SESSION['name']) ? $_SESSION['name'] : '';
      if ($_SERVER['REQUEST_METHOD '] == 'POST') {
      $_SESSION['name'] = $_POST['name'];
      exit('Go to <a href="page2.php ">page 2</a>.');
      }
      echo <<<HTML
      <form action="page1.p hp" method="post">
      <input type="text" name="name" value="$name"/>
      <input type="submit"/>
      </form>
      HTML;
      ?>


      <?php // page2.php
      session_start() ;
      if (!isset($_SESSI ON['name'])) {
      echo 'You need to enter your name. ';
      exit('Please goto <a href="page1.php ">page 1</a>.');
      }
      echo 'Welcome ', $_SESSION['name'];
      ?>

      --
      USENET would be a better place if everybody read: : mail address :
      http://www.catb.org/~esr/faqs/smart-questions.html : is valid for :
      http://www.netmeister.org/news/learn2quote2.html : "text/plain" :
      http://www.expita.com/nomime.html : to 10K bytes :

        Comment

        • Terence
          #3
          Re: scope over multiple pages

          ditto what Pedro said,

          here's my version (cut/paste from a previous post).

          PHP: Predefined Variables - Manual
          http://www.php.net/reserved.variables
          Predefined Variables

          $_SESSION is particularly cool, but you need to run the session_start()
          function first before it works. Unfortunately the above page neglects to
          mention that and it has caught some people out.

          As a newbie, you will want to make sure you get to know PHP's session
          handling capabilities -- IT WILL SAVE YOU A LOT OF WORK!
          PHP: Session Functions - Manual
          http://www.php.net/manual/en/ref.session.php
          Session Functions

          remember that before the $_SESSION superglobal came along, it was
          neccesary to use the other session functions all the time, now you can
          do things like.

          <?php

          session_start() ;

          if(!isset($_SES SION["uname"])) {
          if(blnAuthetica ted($_POST)) { // use form data
          $_SESSION["uname"] = $_POST["uname'];
          }
          else {
          header("Locatio n: login.php"); // redirect them
          die();
          }
          }
          echo "You are currently logged in as ".$_SESSION["uname"];
          ?>

          obviously the above code requires you to write a blnAutheticated ()
          function which accepts an associative array that it will search for
          authentication tokens.

          function blnAutheticated ($arrPost) {
          $blnAuth = false;
          $sqlCheck = "SELECT * FROM users WHERE "
          ."uname = '".$arrPost["uname"]."'";
          ."uname = '".$arrPost["uname"]."'";
          if($arrPost)
          }

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