PHP user logon example-php Tutorial

PHP user logon instance createdatabasePHPDemo01usePHPDemo01createtableworx_user (user_idintegerunsignednotnullauto_increment, usernamevarchar (20) notnull, passwordchar (40) not PHP user logon instance

create database PHPDemo01use PHPDemo01create table worx_user(user_id integer unsigned not null auto_increment,username varchar(20) not null,password char(40) not null,email_addrvarchar(100),is_acvtive      tinyint(1) default 0,        primary key(user_id))engine=myisam default character set latin1collate latin1_general_cs auto_increment=0;create table worx_pending(user_id integer unsigned not null,token char(10)not null,create_date timestamp default current_timestamp,        foreign key(user_id) references worx_user(user_id))engine=myisam default character set latin1collate latin1_general_cs;

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  $value){$key = ($top)?$key : stripslashes($key);$clean_data[$key] = (is_array($value))? stripslashes_rcurs($value,false) : stripslashes($value);}return $clean_data;}$_GET = _stripslashes_rcurs($_GET);$_POST = _stripslashes_rcurs($_POST);}?>

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 uid = null;        $this->fields = array('username' => '', 'password' => '', 'emailAddr' => '',            'isActive' => false);    }    public function _get($field)    {        if ($field == 'userId') {            return $this->uid;        } else {            return $this->fields[$field];        }    }    public function _set($field, $value)    {        if (array_key_exists($field, $this->fields)) {            $this->fields[$field] = $value;        }    }    public static function validateUserName($username)    {        return preg_match('/^[A-Z0-9]{2,20}$/i', $username);    }    public static function validateEmailAddr($email)    {        return filter_var($email, FILTER_VALIDATE_EMAIL);    }    public static function getById($user_id)    {        $user = new User();        $query = sprintf('select username,password,email_addr,is_active' .            'from %sUser where User_ID =%d', DB_TEL_PERFIX, $user_id);        $result = mysql_query($query, $GLOBALS['DB']);        if (mysql_num_rows($result)) {            $row = mysql_fetch_assoc($result);            $user->username = $row['USERNAME'];            $user->password = $row['PASSWORD'];            $user->emailAddr = $row['EMAIL_ADDR'];            $user->isactive = $row['IS_ACTIVE'];            $user->uid = $user_id;        }        mysql_free_result($result);        return $user;    }    public static function getByUsername($username)    {        $user = new User();        $query = sprintf('select user_id,password,email_addr,is_active' .            'from %sUser where username = "$s"', DB_TEL_PERFIX, mysql_real_escape_string($username,            $GLOBALS['DB']));        $result = mysql_query($query, $GLOBALS['DB']);        if (mysql_num_rows($result)) {            $row = mysql_fetch_assoc($result);            $user->username = $row['USERNAME'];            $user->password = $row['PASSWORD'];            $user->emailAddr = $row['EMAIL_ADDR'];            $user->isactive = $row['IS_ACTIVE'];            $user->uid = $user_id;        }        mysql_free_result($result);        return $user;    }    public function save()    {        if ($this->uid) {            $query = sprintf('update %sUser set username="%s",password="%s",email_addr="%s",is_active=%d' .                'where user_id = %d', DB_TEL_PERFIX, mysql_real_escape_string($this->username, $GLOBALS['DB']),                mysql_real_escape_string($this->password, $GLOBALS['DB']),                mysql_real_escape_string($this->emailaddr, $GLOBALS['DB']), $this->isActive, $this->                userId);            return mysql_query($query, $GLOBALS['DB']);        } else {            $query = sprintf('insert into %sUser (username,password,email_addr,is_active) values ("%s","%s","%s","%d")',                DB_TEL_PERFIX, mysql_real_escape_string($this->username, $GLOBALS['DB']),                mysql_real_escape_string($this->password, $GLOBALS['DB']),                mysql_real_escape_string($this->emailaddr, $GLOBALS['DB']), $this->isActive);            if (mysql_query($query, $GLOBALS['DB'])) {                $this->uid = mysql_insert_id($GLOBALS['DB']);                return true;            } else {                return false;            }        }    }    public function setInactive()    {        $this->isActive = false;        $this->save();        $token = random_text(5);        $query = sprintf('insert into %sPending (user_id,token) values (%d,"%s")',            DB_TEL_PERFIX, $this - uid, $token);        return (mysql_query($query, $GLOBALS['DB'])) ? $token : false;    }    public function setActive($token)    {        $query = sprintf('select token from %sPending where user_id = %d'.                        'And token ="%s"',DB_TEL_PERFIX,$this-uid,                        mysql_real_escape_string($token,$GLOBALS['DB']));                        $result = mysql_query($query,$GLOBALS['DB']);        if(!mysql_num_rows($result))        {            mysql_free_result($result);            return false;        }        else        {            mysql_free_result($result);        }    }}?>

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