PHP Authentication User Login Example-Learning notes

1. Basic process:

2.UML class Diagram:

3.PHP Code:

3.1 index.php

<?PHP/** * Created by Phpstorm. * User:andy * date:16-11-25 * Time: PM 10:13*/Session_Start();$validate _username=isset($_session[' Validate_username '])?$_session[' Validate_username ']: ';$validate _password=isset($_session[' Validate_password '])?$_session[' Validate_password ']: ';?>User name:<input type= "text" name= "username" value= ""/><font color= "Red" > <?phpEcho $validate _username;?> </font><br/><br/>Dense&nbsp;&nbsp;&nbsp; code: <input type= "password" name= "password" value= ""/><font color= "Red" > &L t;? PhpEcho $validate _password;?> </font><br/><br/> <input type= "Submit" value= "Submit"/></form></body>< /html>

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3.2 login.php

<?PHP/** * Created by Phpstorm. * User:andy * date:16-11-25 * Time: PM 10:20*/Session_Start();$username=$_post[' username '];$password=$_post[' Password '];$user=NewUser ($username,$password);//determine if the login was successfulTry{Validate:: ValidateUser ($user); //verification passed, login successful    $_session[' username ']=$username; Header(' location:main.php ');}Catch(myexception$me){    //validation Failed    Header(' location:index.php ');}/** * Automatically load class * @param $class * @return string*/function__autoload ($class){    $file= __dir__. ‘/‘ .Strtolower($class) . '. php '; if(Is_file($file)) {        include_once $file; }    return‘‘;}

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3.3 myexception.php

<? PHP /*  */classextendsException{}

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3.4 user.php

<?PHP/** * Created by Phpstorm. * User:andy * date:16-11-25 * Time: PM 10:29*/classuser{Private $username= ' '; Private $password= ' '; function__construct ($username,$password)    {        $this->username =$username; $this->password =$password; }    /** * Return user name * @return string*/     Public functionGetUserName ():string    {        return $this-username; }    /** * Return password * @return string*/     Public functionGetPassword ():string    {        return $this-password; }}

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3.5 validate.php

<?PHP/** * Verify class * Created by Phpstorm. * User:andy * date:16-11-25 * Time: PM 10:34*/classvalidate{/** * Verify user * @param user $user * @throws myexception*/    Static functionValidateUser (User$user)    {        //Print_r ($user);        $username=$user-GetUserName (); $password=$user-GetPassword (); unset($_session[' Validate_username '],$_session[' Validate_password ']); //Verify user name        Try{ Self:: Validateusername ($username); }Catch(myexception$me) {            $_session[' Validate_username ']=$me-GetMessage (); }        //Verify Password        Try{ Self:: ValidatePassword ($password); }Catch(myexception$me) {            $_session[' Validate_password ']=$me-GetMessage (); }        if(isset($me)){            Throw $me; }    }    /** * Verify username * @param $username * @throws myexception*/    Static Private functionValidateusername ($username)    {        $lem=strlen($username); if($lem< 3) {            //Throw Exception            Throw NewMyException (' User name length cannot be less than 3 bits ',E_user_error); } ElseIf($lem> 8) {            Throw NewMyException (' username cannot be longer than 8 bits ',E_user_error); }    }    /** * Verify password * @param $password * @throws myexception*/    Static Private functionValidatePassword ($password)    {        $lem=strlen($password); if($lem< 3) {            //Throw Exception            Throw NewMyException (' Password length cannot be less than 3 bits ',E_user_error); } ElseIf($lem> 8) {            Throw NewMyException (' Password length cannot exceed 8 bits ',E_user_error); }    }}

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(end.)

PHP Authentication User Login Example-Learning notes