PHP 验证登陆类分享

2020-03-22 17:25:40

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var $cookie_where;// '/'
var $cookie_domain;// 'yourweb.com'
var $cookie_secure;// 1和0
//数据库设置
var $select_uid;// 'uid'
var $select_table;// 'user'
var $select_usersname;// 'email'
var $select_password;// 'password'
//盐
var $salt;// "12332"
var $guest_name;// 'Guest'
//用户获取值
var $user_id;
var $username;
var $ok;
var $pre;// 'auth_'
var $depr;// '-'
//内部变量
private $pre_username;
private $pre_password;
html' target='_blank'>public function __construct($config=array()){
$this- set($config);
$this- pre_username=sha1(md5($this- pre.'username'));
$this- pre_password=sha1(md5($this- pre.'password'));
}
public function set($config){
$this- cookie_time = isset($config['cookie_time']) $config['cookie_time']: 7200;
$this- cookie_where = isset($config['cookie_where']) $config['cookie_where']:'/';
$this- cookie_domain = isset($config['cookie_domain']) $config['cookie_domain']:'';
$this- cookie_secure = isset($config['cookie_secure']) $config['cookie_secure']:'';
$this- select_uid = isset($config['select_uid']) $config['select_uid']:'uid';
$this- select_table = isset($config['select_table']) $config['select_table']:'table';
$this- select_usersname = isset($config['select_usersname']) $config['select_usersname']:'user_name';
$this- select_password = isset($config['select_password']) $config['select_password']:'password';
$this- salt = isset($config['salt']) $config['salt']:'sghsdghsdg';//
$this- guest_name = isset($config['guest_name']) $config['guest_name']:'Guest';//
$this- pre = isset($config['auth']) $config['auth']:'auth_';
$this- depr = isset($config['depr']) $config['depr']:'-';
}
//
public function init(){
$this- user_id = 0;
$this- username = $this- guest_name;
$this- ok = false;
if(!$this- check_session()){
$this- check_cookie();
}
return $this-
}
//验证SESSION
private function check_session(){
if(!empty($_SESSION[$this- pre_username])&&!empty($_SESSION[$this- pre_password])){
return $this- check($_SESSION[$this- pre_username],$_SESSION[$this- pre_password]);
} else {
return false;
}
}
//验证COOKIE
private function check_cookie(){
if(!empty($_COOKIE[$this- pre_username])&&!empty($_COOKIE[$this- pre_password])){
return $this- check($_COOKIE[$this- pre_username],$_COOKIE[$this- pre_password]);
} else {
return false;
}
}
//登陆
public function login($username,$password){
$sql = "select ".$this- select_uid." from ".$this- select_table." where ".$this- select_usersname."='$username' and ".$this- select_password."='$password'";
$result = mysql_query($sql);
$rows = mysql_num_rows($sql);
if($rows==1){
$this- user_id = mysql_result($result,0,0);
$this- username = $username;
$this- ok = true;
$username = $username.$this- depr.$this- get_ip();
$user_name = $this- encrypt($username,'E',$this- salt);
$_SESSION[$this- pre_username]=$user_name;
$_SESSION[$this- pre_password]=md5(md5($password,$this- salt));
setcookie($this- pre_username,$user_name,time()+$this- cookie_time,$this- cookie_where,$this- cookie_domain,$this- cookie_secure);
setcookie($this- pre_password,md5(md5($password,$this- salt)),time()+$this- cookie_time,$this- cookie_where,$this- cookie_domain,$this- cookie_secure);
return true;
}
return false;
}
//验证
private function check($username,$password){
$user_name = $this- encrypt($username,'D',$this- salt);
$name = explode($this- depr, $user_name);
$username = $name[0];
$ip = isset($name[1]) $name[1] : NULL;
if($ip !== $this- get_ip()) return false;
static $vars = array();
if(!empty($vars)&&is_array($vars)&&isset($vars[$username.$password])){
$this- user_id = $vars['user_id'];
$this- username = $vars['username'];
$this- ok = $vars['ok'];
return true;
}
$sql = "select ".$this- select_uid.",".$this- select_password." from ".$this- select_table." where ".$this- select_usersname."='$username'";
$query = mysql_query($sql);
$result = mysql_fetch_array($query);
$row = mysql_num_rows($sql);
if($row == 1){
$db_password=$result[$this- select_password];
if(md5(md5($db_password,$this- salt)) == $password){
$this- user_id = $vars['user_id'] = $result[$this- select_uid];
$this- username = $vars['username'] = $username;
$this- ok = $vars['ok'] = true;
$vars[$username.$password] = md5($username.$password);
return true;
}
}
return false;
}
//退出
public function logout(){
$this- user_id = 0;
$this- username = $this- guest_name;
$this- ok = false;
$_SESSION[$this- pre_username]="";
$_SESSION[$this- pre_password]="";
setcookie($this- pre_username,"",time()-$this- cookie_time,$this- cookie_where,$this- cookie_domain,$this- cookie_secure);
setcookie($this- pre_password,"",time()-$this- cookie_time,$this- cookie_where,$this- cookie_domain,$this- cookie_secure);
}
//加密
public function encrypt($string,$operation,$key='') {
$key=md5($key);
$key_length=strlen($key);
$string=$operation=='D' base64_decode($string):substr(md5($string.$key),0,8).$string;
$string_length=strlen($string);
$rndkey=$box=array();
$result='';
for($i=0;$i =255;$i++)
{
$rndkey[$i]=ord($key[$i%$key_length]);
$box[$i]=$i;
}
for($j=$i=0;$i $i++)
{
$j=($j+$box[$i]+$rndkey[$i])%256;
$tmp=$box[$i];
$box[$i]=$box[$j];
$box[$j]=$tmp;
}
for($a=$j=$i=0;$i $string_length;$i++)
{
$a=($a+1)%256;
$j=($j+$box[$a])%256;
$tmp=$box[$a];
$box[$a]=$box[$j];
$box[$j]=$tmp;
$result.=chr(ord($string[$i])^($box[($box[$a]+$box[$j])%256]));
}
if($operation=='D')
{
if(substr($result,0,8)==substr(md5(substr($result,8).$key),0,8))
{
return substr($result,8);
}
else
{
return'';
}
}
else
{
return str_replace('=','',base64_encode($result));
}
}
public function get_ip() {
return $_SERVER['REMOTE_ADDR'];
}
}

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