Usage of PHP verification login class

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:

<?php
/*
 *
 * @ID:      验证登陆类
 *
 * @class:   Auth.class.php
 *
 * @auther:  欣儿
 *
 * @time:    2015/03/12
 *
 * @web:     http://my.oschina.net/xinger
 *
**/
class Auth {
    //外部设置
    //cookie设置
    var $cookie_time;//         7200
    var $cookie_where;//        &#39;/&#39;
    var $cookie_domain;//       &#39;yourweb.com&#39;
    var $cookie_secure;//       1和0
    //数据库设置     
    var $select_uid;//          &#39;uid&#39;
    var $select_table;//        &#39;user&#39;
    var $select_usersname;//    &#39;email&#39;
    var $select_password;//     &#39;password&#39;
    //盐
    var $salt;//                "12332"
    var $guest_name;//          &#39;Guest&#39;
    //用户获取值
    var $user_id;
    var $username;
    var $ok;
    var $pre;//                 &#39;auth_&#39;
    var $depr;//                &#39;-&#39;
    //内部变量
    private $pre_username;
    private $pre_password;
    public function __construct($config=array()){
        $this->set($config);
        $this->pre_username=sha1(md5($this->pre.&#39;username&#39;));
        $this->pre_password=sha1(md5($this->pre.&#39;password&#39;));
    }
    public function set($config){
        $this->cookie_time       = isset($config[&#39;cookie_time&#39;])?$config[&#39;cookie_time&#39;]: 7200;
        $this->cookie_where      = isset($config[&#39;cookie_where&#39;])?$config[&#39;cookie_where&#39;]:&#39;/&#39;;
        $this->cookie_domain = isset($config[&#39;cookie_domain&#39;])?$config[&#39;cookie_domain&#39;]:&#39;&#39;;
        $this->cookie_secure = isset($config[&#39;cookie_secure&#39;])?$config[&#39;cookie_secure&#39;]:&#39;&#39;;
        $this->select_uid        = isset($config[&#39;select_uid&#39;])?$config[&#39;select_uid&#39;]:&#39;uid&#39;;
        $this->select_table      = isset($config[&#39;select_table&#39;])?$config[&#39;select_table&#39;]:&#39;table&#39;;
        $this->select_usersname  = isset($config[&#39;select_usersname&#39;])?$config[&#39;select_usersname&#39;]:&#39;user_name&#39;;
        $this->select_password   = isset($config[&#39;select_password&#39;])?$config[&#39;select_password&#39;]:&#39;password&#39;;
        $this->salt              = isset($config[&#39;salt&#39;])?$config[&#39;salt&#39;]:&#39;sghsdghsdg&#39;;//
        $this->guest_name        = isset($config[&#39;guest_name&#39;])?$config[&#39;guest_name&#39;]:&#39;Guest&#39;;//
        $this->pre               = isset($config[&#39;auth&#39;])?$config[&#39;auth&#39;]:&#39;auth_&#39;;
        $this->depr              = isset($config[&#39;depr&#39;])?$config[&#39;depr&#39;]:&#39;-&#39;;
    }
    //
    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."=&#39;$username&#39; and ".$this->select_password."=&#39;$password&#39;";
        $result = mysql_query($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,&#39;E&#39;,$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,&#39;D&#39;,$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[&#39;user_id&#39;];
            $this->username  = $vars[&#39;username&#39;];
            $this->ok        = $vars[&#39;ok&#39;];
            return true;
        }
        $sql    = "select ".$this->select_uid.",".$this->select_password." from ".$this->select_table." where ".$this->select_usersname."=&#39;$username&#39;";
        $query  = mysql_query($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[&#39;user_id&#39;]  = $result[$this->select_uid];
                $this->username  = $vars[&#39;username&#39;] = $username;
                $this->ok        = $vars[&#39;ok&#39;]       = 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=&#39;&#39;) {
        $key=md5($key);
        $key_length=strlen($key);
        $string=$operation==&#39;D&#39;?base64_decode($string):substr(md5($string.$key),0,8).$string;
        $string_length=strlen($string);
        $rndkey=$box=array();
        $result=&#39;&#39;;
        for($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($operation==&#39;D&#39;)
        {
            if(substr($result,0,8)==substr(md5(substr($result,8).$key),0,8))
            {
                return substr($result,8);
            }
            else
            {
                return&#39;&#39;;
            }
        }
        else
        {
            return str_replace(&#39;=&#39;,&#39;&#39;,base64_encode($result));
        }
    }
    public function get_ip() {
        return $_SERVER[&#39;REMOTE_ADDR&#39;];
    }
}
?>

Summary: Above That’s the entire content of this article, I hope it will be helpful to everyone’s study.

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