api login接口

<?php

require 'conn.php';
header('Content-Type:text/html;charset=utf-8');

$action = $_GET['action'];
switch ($action) {

    //註冊會員
    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 == '') {
            $res = urlencode("參數有誤");
            exit(json_encode($res)); //有空信息
        }

        $sql = "select username from `member` where username='$username'";
        $query = mysql_query($sql, $conn);
        $count = mysql_num_rows($query);

        if ($count > 0) {
            exit(json_encode(1)); //返回1表示註冊失敗
        } else {

            $addsql = "insert into `member` (username,password,email) values ('$username','$password','$email')";
            mysql_query($addsql);
            exit(json_encode(0)); //返回0表示註冊成功
        }
        break;


    //查詢用戶信息
    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;


    //會員登錄
    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) && !empty($rowuser)) {
            if ($rowuser['username'] == $username && $rowuser['password'] == $password) {
                if ($rowuser['password'] == $password) {
                    $res = urlencode("登錄成功");
                    exit(json_encode($res));
                } else {
                    $res = urlencode("密碼錯誤");
                    exit(json_encode($res));
                }
            } else {
                $res = urlencode("用戶名不存在");
                exit(json_encode($res));
            }
        } else {
            $res = urlencode("用戶名密碼錯誤");
            exit(json_encode($res));
        }
        /*
         * 0：表示登錄成功，1：表示密碼錯誤，2：用戶名不存在，3：用戶名密碼錯誤
         */
        break;

    default:
        exit(json_encode(error));
}
?>