sessionprob

[matt]

hi leutz!

ich benutze diesen sessionschnipsel aus dem buch php 4.0 von ratschiller/gerken vom verlag addison-wesley:

<?
/*****************************************************************************
 *                                                                           *
 *                Web Application Development with PHP                       *
 *                                 by                                        *
 *                 Tobias Ratschiller and Till Gerken                        *
 *                                                                           *
 *          Copyright (c) 2000, Tobias Ratschiller and Till Gerken           *
 *                                                                           *
 *****************************************************************************
 *                                                                           *
 * $Title: MySQL storage module for PHP 4.0's session library $              *
 * $Chapter: Web Application Concepts $                                      *
 * $Executable: false $                                                      * 
 *                                                                           *
 * $Description:                                                             *
 * This is user-level storage module for PHP 4.0's session library.          * 
 * These functions can be registered by calling session_set_save_handler(). $*
 *                                                                           *
 *****************************************************************************/

/*
 *  See the bottom of this file for an example how these functions.
 *  You'll also need to set an appopiate MySQL table with this schema:
 *
    # phpMyAdmin MySQL-Dump
    # http://phpwizard.net/phpMyAdmin/
    #
    # Host: localhost Database : book
    # --------------------------------------------------------
    
    #
    # Table structure for table 'sessions'
    #

    CREATE TABLE sessions (
       id varchar(50) NOT NULL,
       data mediumtext NOT NULL,
       t_stamp timestamp(14),
       PRIMARY KEY (id),
       KEY t_stamp (t_stamp)
    );
 *
 */

$sess_mysql = array();
$sess_mysql["open_connection"] = true;         // Establish a MySQL connection on session startup?
$sess_mysql["hostname"]        = $host;        // MySQL hostname
$sess_mysql["user"]            = $user;        // MySQL username
$sess_mysql["password"]        = $pass;        // MySQL password
$sess_mysql["db"]              = $strDatabase; // Database where to store the sessions
$sess_mysql["table"]           = "sessions";   // Table where to store the sessions

function sess_mysql_open($save_path, $sess_name) {
  global $sess_mysql;

  // Establish a MySQL connection, if $sess_mysql["open_connection"] is true
  if ($sess_mysql["open_connection"]) {
    $link = mysql_pconnect($sess_mysql["hostname"], $sess_mysql["user"], $sess_mysql["password"]) or die(mysql_error());
  }

  return(true);
}

function sess_mysql_read($sess_id) {
  global $sess_mysql;

  // Select the data belonging to session $sess_id from the MySQL session table
  $result = mysql_db_query($sess_mysql["db"], "SELECT data FROM ".$sess_mysql["table"]." WHERE id = '$sess_id'") or die(mysql_error());

  // Return an empty string if no data was found for this session
  if(mysql_num_rows($result) == 0) {
    return("");
  }

  // Session data was found, so fetch and return it
  $row = mysql_fetch_array($result);
  mysql_free_result($result);

  return($row["data"]);
}

function sess_mysql_write($sess_id, $val) {
  global $sess_mysql;

  // Write the serialized session data ($val) to the MySQL ession table
  $result = mysql_db_query($sess_mysql["db"], "REPLACE INTO ".$sess_mysql["table"]." VALUES ('$sess_id', '$val', null)") or die(mysql_error());

  return(true);
}

function sess_mysql_destroy($sess_id) {
  global $sess_mysql;

  // Delete from the MySQL table all data for the session $sess_id
  $result = mysql_db_query($sess_mysql["db"], "DELETE FROM ".$sess_mysql["table"]." WHERE id = '$sess_id'") or die(mysql_error());

  return(true);
}

function sess_mysql_gc($max_lifetime) {
  global $sess_mysql;

  // Old values are values with a Unix less than now - $max_lifetime
  $old = time() - $max_lifetime;

  // Delete old values from the MySQL session table
  $result = mysql_db_query($sess_mysql["db"], "DELETE FROM ".$sess_mysql["table"]." WHERE UNIX_TIMESTAMP(t_stamp) < $old") or die(mysql_error());

  return(true);
}


/*
 *  Basic Example: Registering the above functions with session_set_save_handler()
 *
$foo = 10;
session_set_save_handler("sess_mysql_open", "", "sess_mysql_read", "sess_mysql_write", "sess_mysql_destroy", "sess_mysql_gc");
session_start();
session_register("foo");
echo "foo: $foo";
$foo++; 
 *
 */

/* $Id: MySQL_Session_Module.php,v 1.2 2000/06/15 19:51:10 tobias Exp $ */
?>

die session starte ich dann mit diesem code:

  require("inc/session.inc.php");
  session_set_save_handler("sess_mysql_open", "", "sess_mysql_read", "sess_mysql_write", "sess_mysql_destroy", "sess_mysql_gc");
  session_start();

die variablen registriere ich natürlich mit

session_register("varname");

auf localhost funktioniert das fast einwandfrei, nur im web nich. weiß jemand warum?

na ja, das war aber nich meine eigentliche frage. wenn ich das auf localhost laufen lasse, gebe ich in ein formular den inhalt von varname ein und schick das ab. gehe ich dann eine seite zurück und ändere den inhalt des formulars und schicke es ab, bleibt der wert von varname gleich! (bei jedem aufruf der seite wird jedesmal die variable registriert, sofern etwas im formular drinsteht).

hat jemand ne ahnung wegen den 2 problemen? wäre euch sehr verbunden

danke, matt

 

[matt]

*threadhochhol*

leutz, ich brauch auch hilfe!!!

 

[BaDmOjO]

Ich hab das Problem mit dem Formular so gelöst, funktioniert einwandfrei.

 @session_start();
        if (isset($HTTP_POST_VARS["submit"]))
        { foreach($HTTP_POST_VARS as $key => $value){
           if (!isset($HTTP_SESSION_VARS["$key"])){
                 session_register("$key");
                 $HTTP_SESSION_VARS["$key"] = "$value";
           }
           else {$$key = $value;} 
       }

So sollte es funktionieren.