0

Hello I am getting this error - even if object database is initialized in class that is in database.php and then included in session.php that gives an error.

I've tested the thing in another script jok.php that is bellow and it works there. I've already lost 1 day on this problem.

Fatal error: Call to a member function addActiveGuest() on a non-object ... on line 60

part of script session.php (comment before error, line - 60):

include_once("database.php");
include_once("mailer.php");
include_once("form.php");

class Session
{
   var $username;     //Username given on sign-up
   var $userid;       //Random value generated on current login
   var $userlevel;    //The level to which the user pertains
   var $time;         //Time user was last active (page loaded)
   var $logged_in;    //True if user is logged in, false otherwise
   var $userinfo = array();  //The array holding all user info
   var $url;          //The page url current being viewed
   var $referrer;     //Last recorded site page viewed
   /**
    * Note: referrer should really only be considered the actual
    * page referrer in process.php, any other time it may be
    * inaccurate.
    */

   /* Class constructor */
   //function Session()
   function __construct(){
      $this->time = time();
      $this->startSession();
   }
 

   /**
    * startSession - Performs all the actions necessary to 
    * initialize this session object. Tries to determine if the
    * the user has logged in already, and sets the variables 
    * accordingly. Also takes advantage of this page load to
    * update the active visitors tables.
    */
   function startSession(){
      
	  //The database connection
	//var_dump($database);
      session_start();   //Tell PHP to start the session

      /* Determine if user is logged in */
      $this->logged_in = $this->checkLogin();

      /**
       * Set guest value to users not logged in, and update
       * active guests table accordingly.
       */
      if(!$this->logged_in){
         $this->username = $_SESSION['username'] = GUEST_NAME;
         $this->userlevel = GUEST_LEVEL;
		 
		 //$db = new MySQLDB;
		 //var_dump($db);
		 //$db->addActiveGuest($_SERVER['REMOTE_ADDR'], $this->time);
		
          global $database;

//THIS IS THE LINE THAT GIVES FATAL ERROR
         $database->addActiveGuest($_SERVER['REMOTE_ADDR'], $this->time);
		 
      }
      /* Update users last active timestamp */
      else{
         $database->addActiveUser($this->username, $this->time);
      }
      
      /* Remove inactive visitors from database */
      $database->removeInactiveUsers();
      $database->removeInactiveGuests();

//rest of the class methods....

And this is the database class from where adActiveUser method is defined. database.php:

<?php
/**
 * Database.php
 * 
 * The Database class is meant to simplify the task of accessing
 * information from the website's database.
 *
 * Written by: Jpmaster77 a.k.a. The Grandmaster of C++ (GMC)
 * Last Updated: August 17, 2004
 */
include("constants.php");
      
class MySQLDB
{
   var $connection;         //The MySQL database connection
   var $num_active_users;   //Number of active users viewing site
   var $num_active_guests;  //Number of active guests viewing site
   var $num_members;        //Number of signed-up users
   /* Note: call getNumMembers() to access $num_members! */

   /* Class constructor */
   function __construct(){
      /* Make connection to database */
      $this->connection = mysql_connect(DB_SERVER, DB_USER, DB_PASS) or die(mysql_error());
      mysql_select_db(DB_NAME, $this->connection) or die(mysql_error());
      
      /**
       * Only query database to find out number of members
       * when getNumMembers() is called for the first time,
       * until then, default value set.
       */
      $this->num_members = -1;
      
      if(TRACK_VISITORS){
         /* Calculate number of users at site */
         $this->calcNumActiveUsers();
      
         /* Calculate number of guests at site */
         $this->calcNumActiveGuests();
      }
   }

   /**
    * confirmUserPass - Checks whether or not the given
    * username is in the database, if so it checks if the
    * given password is the same password in the database
    * for that user. If the user doesn't exist or if the
    * passwords don't match up, it returns an error code
    * (1 or 2). On success it returns 0.
    */
   function confirmUserPass($username, $password){
      /* Add slashes if necessary (for query) */
      if(!get_magic_quotes_gpc()) {
	      $username = addslashes($username);
      }

      /* Verify that user is in database */
      $q = "SELECT password FROM ".TBL_USERS." WHERE username = '$username'";
      $result = mysql_query($q, $this->connection);
      if(!$result || (mysql_numrows($result) < 1)){
         return 1; //Indicates username failure
      }

      /* Retrieve password from result, strip slashes */
      $dbarray = mysql_fetch_array($result);
      $dbarray['password'] = stripslashes($dbarray['password']);
      $password = stripslashes($password);

      /* Validate that password is correct */
      if($password == $dbarray['password']){
         return 0; //Success! Username and password confirmed
      }
      else{
         return 2; //Indicates password failure
      }
   }
   
   /**
    * confirmUserID - Checks whether or not the given
    * username is in the database, if so it checks if the
    * given userid is the same userid in the database
    * for that user. If the user doesn't exist or if the
    * userids don't match up, it returns an error code
    * (1 or 2). On success it returns 0.
    */
   function confirmUserID($username, $userid){
      /* Add slashes if necessary (for query) */
      if(!get_magic_quotes_gpc()) {
	      $username = addslashes($username);
      }

      /* Verify that user is in database */
      $q = "SELECT userid FROM ".TBL_USERS." WHERE username = '$username'";
      $result = mysql_query($q, $this->connection);
      if(!$result || (mysql_numrows($result) < 1)){
         return 1; //Indicates username failure
      }

      /* Retrieve userid from result, strip slashes */
      $dbarray = mysql_fetch_array($result);
      $dbarray['userid'] = stripslashes($dbarray['userid']);
      $userid = stripslashes($userid);

      /* Validate that userid is correct */
      if($userid == $dbarray['userid']){
         return 0; //Success! Username and userid confirmed
      }
      else{
         return 2; //Indicates userid invalid
      }
   }
   
   /**
    * usernameTaken - Returns true if the username has
    * been taken by another user, false otherwise.
    */
   function usernameTaken($username){
      if(!get_magic_quotes_gpc()){
         $username = addslashes($username);
      }
      $q = "SELECT username FROM ".TBL_USERS." WHERE username = '$username'";
      $result = mysql_query($q, $this->connection);
      return (mysql_numrows($result) > 0);
   }
   
   
   /**
    * emailTaken - Returns true if the email has
    * been taken by another user, false otherwise.
    */
    function emailTaken($email){
       if(!get_magic_quotes_gpc()){
          $email = addslashes($email);
       }
       $q = "SELECT email FROM ".TBL_USERS." WHERE email = '$email'";
       $result = mysql_query($q, $this->connection);
       return (mysql_num_rows($result) > 0);
    }
    
   /**
    * usernameBanned - Returns true if the username has
    * been banned by the administrator.
    */
   function usernameBanned($username){
      if(!get_magic_quotes_gpc()){
         $username = addslashes($username);
      }
      $q = "SELECT username FROM ".TBL_BANNED_USERS." WHERE username = '$username'";
      $result = mysql_query($q, $this->connection);
      return (mysql_numrows($result) > 0);
   }
   
   /**
    * addNewUser - Inserts the given (username, password, email)
    * info into the database. Appropriate user level is set.
    * Returns true on success, false otherwise.
    */
   function addNewUser($username, $password, $email, $userid, $name){
      $time = time();
      /* If admin sign up, give admin user level */
      if(strcasecmp($username, ADMIN_NAME) == 0){
         $ulevel = ADMIN_LEVEL;
      }else{
         $ulevel = USER_LEVEL;
      }
      $q = "INSERT INTO ".TBL_USERS." VALUES ('$username', '$password', '$userid', $ulevel, '$email', $time, '0', '$name')";
      return mysql_query($q, $this->connection);
   }
   
   /**
    * updateUserField - Updates a field, specified by the field
    * parameter, in the user's row of the database.
    */
   function updateUserField($username, $field, $value){
      $q = "UPDATE ".TBL_USERS." SET ".$field." = '$value' WHERE username = '$username'";
      return mysql_query($q, $this->connection);
   }
   
   /**
    * getUserInfo - Returns the result array from a mysql
    * query asking for all information stored regarding
    * the given username. If query fails, NULL is returned.
    */
   function getUserInfo($username){
      $q = "SELECT * FROM ".TBL_USERS." WHERE username = '$username'";
      $result = mysql_query($q, $this->connection);
      /* Error occurred, return given name by default */
      if(!$result || (mysql_numrows($result) < 1)){
         return NULL;
      }
      /* Return result array */
      $dbarray = mysql_fetch_array($result);
      return $dbarray;
   }
   
   /**
    * getNumMembers - Returns the number of signed-up users
    * of the website, banned members not included. The first
    * time the function is called on page load, the database
    * is queried, on subsequent calls, the stored result
    * is returned. This is to improve efficiency, effectively
    * not querying the database when no call is made.
    */
   function getNumMembers(){
      if($this->num_members < 0){
         $q = "SELECT * FROM ".TBL_USERS;
         $result = mysql_query($q, $this->connection);
         $this->num_members = mysql_numrows($result);
      }
      return $this->num_members;
   }
   
   /**
    * calcNumActiveUsers - Finds out how many active users
    * are viewing site and sets class variable accordingly.
    */
   function calcNumActiveUsers(){
      /* Calculate number of users at site */
      $q = "SELECT * FROM ".TBL_ACTIVE_USERS;
      $result = mysql_query($q, $this->connection);
      $this->num_active_users = mysql_numrows($result);
   }
   
   /**
    * calcNumActiveGuests - Finds out how many active guests
    * are viewing site and sets class variable accordingly.
    */
   function calcNumActiveGuests(){
      /* Calculate number of guests at site */
      $q = "SELECT * FROM ".TBL_ACTIVE_GUESTS;
      $result = mysql_query($q, $this->connection);
      $this->num_active_guests = mysql_numrows($result);
   }
   
   /**
    * addActiveUser - Updates username's last active timestamp
    * in the database, and also adds him to the table of
    * active users, or updates timestamp if already there.
    */
   function addActiveUser($username, $time){
      $q = "UPDATE ".TBL_USERS." SET timestamp = '$time' WHERE username = '$username'";
      mysql_query($q, $this->connection);
      
      if(!TRACK_VISITORS) return;
      $q = "REPLACE INTO ".TBL_ACTIVE_USERS." VALUES ('$username', '$time')";
      mysql_query($q, $this->connection);
      $this->calcNumActiveUsers();
   }
   
   /* addActiveGuest - Adds guest to active guests table */
   function addActiveGuest($ip, $time){
      if(!TRACK_VISITORS) return;
      $q = "REPLACE INTO ".TBL_ACTIVE_GUESTS." VALUES ('$ip', '$time')";
      mysql_query($q, $this->connection);
      $this->calcNumActiveGuests();
	  //test
		//echo "dodajam aktivne goster";
   }
   
   /* These functions are self explanatory, no need for comments */
   
   /* removeActiveUser */
   function removeActiveUser($username){
      if(!TRACK_VISITORS) return;
      $q = "DELETE FROM ".TBL_ACTIVE_USERS." WHERE username = '$username'";
      mysql_query($q, $this->connection);
      $this->calcNumActiveUsers();
   }
   
   /* removeActiveGuest */
   function removeActiveGuest($ip){
      if(!TRACK_VISITORS) return;
      $q = "DELETE FROM ".TBL_ACTIVE_GUESTS." WHERE ip = '$ip'";
      mysql_query($q, $this->connection);
      $this->calcNumActiveGuests();
   }
   
   /* removeInactiveUsers */
   function removeInactiveUsers(){
      if(!TRACK_VISITORS) return;
      $timeout = time()-USER_TIMEOUT*60;
      $q = "DELETE FROM ".TBL_ACTIVE_USERS." WHERE timestamp < $timeout";
      mysql_query($q, $this->connection);
      $this->calcNumActiveUsers();
   }

   /* removeInactiveGuests */
   function removeInactiveGuests(){
      if(!TRACK_VISITORS) return;
      $timeout = time()-GUEST_TIMEOUT*60;
      $q = "DELETE FROM ".TBL_ACTIVE_GUESTS." WHERE timestamp < $timeout";
      mysql_query($q, $this->connection);
      $this->calcNumActiveGuests();
   }
   
   /**
    * query - Performs the given query on the database and
    * returns the result, which may be false, true or a
    * resource identifier.
    */
   function query($query){
      return mysql_query($query, $this->connection);
   }
};

/* Create database connection */
$database = new MySQLDB;

?>

Weirdly enough when I created another script named jok.php - it worked. I can not get session.php working.

jok.php:

<?php
include_once ("database.php");
	
	class Cry
	{
		public $neki="0";
		
		function __construct()
		{
			global $database;
			$database->addActiveGuest($_SERVER['REMOTE_ADDR'], time());
			$this->neki = "lool";
			echo $this->neki;
		}
	
	}
	
	$buho = new Cry();
?>
4
Contributors
6
Replies
14
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6 Years
Discussion Span
Last Post by mmnnbbv
0

What version of php are you using?

Also what have you changed in the script, because what you have there is not the same as the files I downloaded for the site you just gave.

Edited by somedude3488: n/a

0

I have PHP 5 with Godaddy web hosting


Any change I did to script was just to insert control functions that I commented out at the end...

I think that it has something to do with php version.

0

I have PHP 5 with Godaddy web hosting


Any change I did to script was just to insert control functions that I commented out at the end...

I think that it has something to do with php version.

0

I think i solved this problem ...
the problem is caused by a situation in which the login script is called (with include or require) from ( IN ) other class...
example

cass bad_class {

function bad_class(){
require_once("[ files from this  script ]");
} 

}

Edited by fire1: bad word

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