API接口服务端

<?php
/**
* API接口服务端
* 
*
*/
    require 'mysql_class.php'; 
    header('Content-Type:text/html;charset=utf-8'); 
     
    $action = $_GET['action']; 
    switch ($action) { 
     
        //注册会员 
        case"adduserinfo"; 
            $username = lib_replace_end_tag(trim($_GET['username'])); 
            $password2 = lib_replace_end_tag(trim($_GET['userpassword'])); 
            $password = md5("$password2" . ALL_PS); 
            $email = lib_replace_end_tag(trim($_GET['email'])); 
     
            if ($username == '' || $password2 == '' || $password == '') { 
                $res = urlencode("参数有误"); 
                exit(json_encode($res)); //有空信息 
            } 
     
            $sql = "select username from `member` where username='$username'"; 
            $query = mysql-query.html target=_blank class=infotextkey>mysql_query()($sql, $conn); 
            $count = mysql_num_rows($query); 
     
            if ($count > 0) { 
                exit(json_encode(1)); //返回1表示注册失败 
            } else { 
     
                $addsql = "insert into `member` (username,password,email) values ('$username','$password','$email')"; 
                mysql_query($addsql); 
                exit(json_encode(0)); //返回0表示注册成功 
            } 
            break;
     
        //查询用户信息 
        case"selectuserinfo"; 
            $username = lib_replace_end_tag($_GET['username']); 
            $sql = "select id,username,nickname,mobile from `member` where username='$username'"; 
            $query = mysql_query($sql, $conn); 
            $row = mysql_fetch_array($query); 
            foreach ($row as $key => $v) { 
                $res[$key] = urlencode($v); 
            } 
            exit(json_encode($res)); 
            break;
     
        //会员登录 
        case"userlogin"; 
            $username = lib_replace_end_tag($_GET['username']); 
            $password2 = lib_replace_end_tag(trim($_GET['userpassword'])); 
            $password = md5("$password2" . ALL_PS); 
            $sqluser = "select id,username,password from `member` where username='" . $username . "' and password='" . $password . "'"; 
            $queryuser = mysql_query($sqluser); 
            $rowuser = mysql_fetch_array($queryuser); 
            if ($rowuser && is_array($rowuser) && !emptyempty($rowuser)) { 
                if ($rowuser['username'] == $username && $rowuser['password'] == $password) { 
                    if ($rowuser['password'] == $password) { 
                        $res = urlencode("登录成功"); 
                        exit(json_encode($res)); 
                    } else { 
                        $res = urlencode("密码错误"); 
                        exit(json_encode($res)); 
                    } 
                } else { 
                    $res = urlencode("用户名不存在"); 
                    exit(json_encode($res)); 
                } 
            } else { 
                $res = urlencode("用户名密码错误"); 
                exit(json_encode($res)); 
            } 
            /*
             * 0：表示登录成功，1：表示密码错误，2：用户名不存在，3：用户名密码错误
             */ 
            break; 
     
        default: 
            exit(json_encode(error)); 
    }  
?>