PHP login verification sharing

This article introduces a piece of code for user login and verification implemented in php. the login and database query are not separated. if you need a friend, you can refer to the simple login class for learning, login and database query are not separated

The code is as follows:

/*
* Example
*
* $ Auth = new Auth ();
* $ Auth-> login ("123@123.com", "123 ");
* $ Auth-> logout ();
* Echo $ r-> init ();
*
**/

Verify login class

The code is as follows:

<? Php
/*
*
* @ ID: authentication login class
*
* @ Class: Auth. class. php
*
* @ Auther: Hiner
*
* @ Time: 2015/03/12
*
* @ Web: http://my.oschina.net/xinger
*
**/
Class Auth {
// External settings
// Cookie settings
Var $ cookie_time; // 7200
Var $ cookie_where ;//'/'
Var $ cookie_domain; // 'yourweb. com'
Var $ cookie_secure; // 1 and 0
// Database settings
Var $ select_uid; // 'uid'
Var $ select_table; // 'user'
Var $ select_usersname; // 'email'
Var $ select_password; // 'password'
// Salt
Var $ salt; // 12332"
Var $ guest_name; // 'guest'
// The user obtains the value.
Var $ user_id;
Var $ username;
Var $ OK;
Var $ pre; // 'auth _'
Var $ depr ;//'-'
// Internal variable
Private $ pre_username;
Private $ pre_password;
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 ['dep'])? $ Config ['dep']: '-';
}
//
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;
}
// Verify the 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;
}
}
// Verify the 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;
}
}
// Login
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;
}
// Verify
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;
}
// Exit
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 );
}
// Encryption
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 <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,) = substr (md5 (substr ($ result, 8). $ key ))
{
Return substr ($ result, 8 );
}
Else
{
Return '';
}
}
Else
{
Return str_replace ('=', '', base64_encode ($ result ));
}
}
Public function get_ip (){
Return $ _ SERVER ['remote _ ADDR '];
}
}
?>

The above is all the content of this article. I hope you will like it.