This article introduces to you a piece of code for user login and verification using PHP. It does not separate login and database query. Friends in need can refer to the
simple login class. No Separate login and database query
The code is as follows:
/*
* 例子
*
* $Auth=new Auth();
* $Auth->login("123@123.com","123");
* $Auth->logout();
* echo $r->init();
*
**/Verification login class
The code is as follows:
set($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 $this->ok;
}
//验证SESSION
private function check_session(){
if(!empty($_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<256;$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'];
}
}
?>Summary: Above That’s the entire content of this article, I hope it will be helpful to everyone’s study.
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