一个老外写的PHP登录类phpUserClass

<?php /** * PHP Class to user access (login, register, logout, etc) * * <code><?php * include('access.class.php'); * $user = new flexibleAccess(); * ? ></code> * * For support issues please refer to the webdigity forums : * http://www.webdigity.com/index.php/board,91.0.html * or the official web site: * http://phpUserClass.com/ * ============================================================================== * * @version $Id: access.class.php,v 0.93 2008/05/02 10:54:32 $ * @copyright Copyright (c) 2007 Nick Papanotas (http://www.webdigity.com) * @author Nick Papanotas <nikolas@webdigity.com> * @license http://opensource.org/licenses/gpl-license.php GNU General Public License (GPL) * * ============================================================================== */ /** * Flexible Access - The main class * * @param string $dbName * @param string $dbHost * @param string $dbUser * @param string $dbPass * @param string $dbTable */ class flexibleAccess{ /*Settings*/ /** * The database that we will use * var string */ var $dbName = 'database'; /** * The database host * var string */ var $dbHost = 'localhost'; /** * The database port * var int */ var $dbPort = 3306; /** * The database user * var string */ var $dbUser = 'user'; /** * The database password * var string */ var $dbPass = 'password'; /** * The database table that holds all the information * var string */ var $dbTable = 'users'; /** * The session variable ($_SESSION[$sessionVariable]) which will hold the data while the user is logged on * var string */ var $sessionVariable = 'userSessionValue'; /** * Those are the fields that our table uses in order to fetch the needed data. The structure is 'fieldType' => 'fieldName' * var array */ var $tbFields = array( 'userID'=> 'userID', 'login' => 'username', 'pass' => 'password', 'email' => 'email', 'active'=> 'active' ); /** * When user wants the system to remember him/her, how much time to keep the cookie? (seconds) * var int */ var $remTime = 2592000;//One month /** * The name of the cookie which we will use if user wants to be remembered by the system * var string */ var $remCookieName = 'ckSavePass'; /** * The cookie domain * var string */ var $remCookieDomain = ''; /** * The method used to encrypt the password. It can be sha1, md5 or nothing (no encryption) * var string */ var $passMethod = 'sha1'; /** * Display errors? Set this to true if you are going to seek for help, or have troubles with the script * var bool */ var $displayErrors = true; /*Do not edit after this line*/ var $userID; var $dbConn; var $userData=array(); /** * Class Constructure * * @param string $dbConn * @param array $settings * @return void */ function flexibleAccess($dbConn = '', $settings = '') { if ( is_array($settings) ){ foreach ( $settings as $k => $v ){ if ( !isset( $this->{$k} ) ) die('Property '.$k.' does not exists. Check your settings.'); $this->{$k} = $v; } } $this->remCookieDomain = $this->remCookieDomain == '' ? $_SERVER['HTTP_HOST'] : $this->remCookieDomain; $this->dbConn = ($dbConn=='')? mysql_connect($this->dbHost.':'.$this->dbPort, $this->dbUser, $this->dbPass):$dbConn; if ( !$this->dbConn ) die(mysql_error($this->dbConn)); mysql_select_db($this->dbName, $this->dbConn)or die(mysql_error($this->dbConn)); if( !isset( $_SESSION ) ) session_start(); if ( !empty($_SESSION[$this->sessionVariable]) ) { $this->loadUser( $_SESSION[$this->sessionVariable] ); } //Maybe there is a cookie? if ( isset($_COOKIE[$this->remCookieName]) && !$this->is_loaded()){ //echo 'I know you<br />'; $u = unserialize(base64_decode($_COOKIE[$this->remCookieName])); $this->login($u['uname'], $u['password']); } } /** * Login function * @param string $uname * @param string $password * @param bool $loadUser * @return bool */ function login($uname, $password, $remember = false, $loadUser = true) { $uname = $this->escape($uname); $password = $originalPassword = $this->escape($password); switch(strtolower($this->passMethod)){ case 'sha1': $password = "SHA1('$password')"; break; case 'md5' : $password = "MD5('$password')";break; case 'nothing': $password = "'$password'"; } $res = $this->query("SELECT * FROM `{$this->dbTable}` WHERE `{$this->tbFields['login']}` = '$uname' AND `{$this->tbFields['pass']}` = $password LIMIT 1",__LINE__); if ( @mysql_num_rows($res) == 0) return false; if ( $loadUser ) { $this->userData = mysql_fetch_array($res); $this->userID = $this->userData[$this->tbFields['userID']]; $_SESSION[$this->sessionVariable] = $this->userID; if ( $remember ){ $cookie = base64_encode(serialize(array('uname'=>$uname,'password'=>$originalPassword))); $a = setcookie($this->remCookieName, $cookie,time()+$this->remTime, '/', $this->remCookieDomain); } } return true; } /** * Logout function * param string $redirectTo * @return bool */ function logout($redirectTo = '') { setcookie($this->remCookieName, '', time()-3600); $_SESSION[$this->sessionVariable] = ''; $this->userData = ''; if ( $redirectTo != '' && !headers_sent()){ header('Location: '.$redirectTo ); exit;//To ensure security } } /** * Function to determine if a property is true or false * param string $prop * @return bool */ function is($prop){ return $this->get_property($prop)==1?true:false; } /** * Get a property of a user. You should give here the name of the field that you seek from the user table * @param string $property * @return string */ function get_property($property) { if (empty($this->userID)) $this->error('No user is loaded', __LINE__); if (!isset($this->userData[$property])) $this->error('Unknown property <b>'.$property.'</b>', __LINE__); return $this->userData[$property]; } /** * Is the user an active user? * @return bool */ function is_active() { return $this->userData[$this->tbFields['active']]; } /** * Is the user loaded? * @ return bool */ function is_loaded() { return empty($this->userID) ? false : true; } /** * Activates the user account * @return bool */ function activate() { if (empty($this->userID)) $this->error('No user is loaded', __LINE__); if ( $this->is_active()) $this->error('Allready active account', __LINE__); $res = $this->query("UPDATE `{$this->dbTable}` SET {$this->tbFields['active']} = 1 WHERE `{$this->tbFields['userID']}` = '".$this->escape($this->userID)."' LIMIT 1"); if (@mysql_affected_rows() == 1) { $this->userData[$this->tbFields['active']] = true; return true; } return false; } /* * Creates a user account. The array should have the form 'database field' => 'value' * @param array $data * return int */ function insertUser($data){ if (!is_array($data)) $this->error('Data is not an array', __LINE__); switch(strtolower($this->passMethod)){ case 'sha1': $password = "SHA1('".$data[$this->tbFields['pass']]."')"; break; case 'md5' : $password = "MD5('".$data[$this->tbFields['pass']]."')";break; case 'nothing': $password = $data[$this->tbFields['pass']]; } foreach ($data as $k => $v ) $data[$k] = "'".$this->escape($v)."'"; $data[$this->tbFields['pass']] = $password; $this->query("INSERT INTO `{$this->dbTable