重定向后保存值

Question

我正在将值保存到$_SESSiON变量中，但在我提交表单后，我将其重定向到同一页面，$_SESSION变量为空。     

include 'googleauthorize.php';
include 'googleTransfer.php';


if (session_status() == PHP_SESSION_NONE) {
    session_start();
}
if (isset($_REQUEST['logout']))
    unset($_SESSION['auth']);


if(isset($_REQUEST['auth'])){
    //Initialize google client
    $_SESSION['auth'] = new GoogleAuthorize(__DIR__ . '/../oauth-credentials.json', 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']."?auth", "https://www.googleapis.com/auth/drive");
    //Get authorize URL
    $authUrl = $_SESSION['auth']->obtainAuthorizeUrl();

    //Redirect  
    if(!isset($_GET['code'])){
        $_SESSION['auth']->redirect($authUrl);
    }
    //Authentificate and return token
    $_SESSION['token'] = $_SESSION['auth']->obtainAccessToken();
    if(!isset($_SESSION['refreshToken']))
    {
        $_SESSION['refreshToken'] = $_SESSION['auth']->getRefreshToken();
        //Call method to save token into DB
    }
}elseif(isset($_REQUEST['upload'])){
    if(isset($_SESSION['auth']))
    {
        //Initialize google client
        $_SESSION['auth'] = new GoogleAuthorize(__DIR__ . '/../oauth-credentials.json', 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'], "https://www.googleapis.com/auth/drive");
    }
//Here is undefined index 'token'
    $_SESSION['auth']->setAccessToken($_SESSION['token']);

    //Initialize new object for file transfer
    new googleTransfer($_SESSION['auth']->getGoogleClient());
    }

这是$_SESSION语句中elseif变量的内容。这让我感到困惑，因为里面只保存了auth，里面没有设置任何东西。

    Array
(
    [auth] => GoogleAuthorize Object
        (
            [client:GoogleAuthorize:private] => Google_Client Object
                (
                    [auth:Google_Client:private] => Google\Auth\OAuth2 Object
                        (
                            [authorizationUri:Google\Auth\OAuth2:private] => GuzzleHttp\Psr7\Uri Object
                                (
                                    [scheme:GuzzleHttp\Psr7\Uri:private] => https
                                    [userInfo:GuzzleHttp\Psr7\Uri:private] => 
                                    [host:GuzzleHttp\Psr7\Uri:private] => accounts.google.com
                                    [port:GuzzleHttp\Psr7\Uri:private] => 
                                    [path:GuzzleHttp\Psr7\Uri:private] => /o/oauth2/auth
                                    [query:GuzzleHttp\Psr7\Uri:private] => 
                                    [fragment:GuzzleHttp\Psr7\Uri:private] => 
                                )

                            [tokenCredentialUri:Google\Auth\OAuth2:private] => GuzzleHttp\Psr7\Uri Object
                                (
                                    [scheme:GuzzleHttp\Psr7\Uri:private] => https
                                    [userInfo:GuzzleHttp\Psr7\Uri:private] => 
                                    [host:GuzzleHttp\Psr7\Uri:private] => www.googleapis.com
                                    [port:GuzzleHttp\Psr7\Uri:private] => 
                                    [path:GuzzleHttp\Psr7\Uri:private] => /oauth2/v4/token
                                    [query:GuzzleHttp\Psr7\Uri:private] => 
                                    [fragment:GuzzleHttp\Psr7\Uri:private] => 
                                )

                            [redirectUri:Google\Auth\OAuth2:private] => http://localhost:81/FileTransfer/src/testik.php?auth
                            [clientId:Google\Auth\OAuth2:private] => 108715515230-g8e7tjh2d7luiggtfes6fsdv17n794hu.apps.googleusercontent.com
                            [clientSecret:Google\Auth\OAuth2:private] => Ab-DiaYYRnVSFf8JGay-TIMN
                            [username:Google\Auth\OAuth2:private] => 
                            [password:Google\Auth\OAuth2:private] => 
                            [scope:Google\Auth\OAuth2:private] => 
                            [state:Google\Auth\OAuth2:private] => 
                            [code:Google\Auth\OAuth2:private] => 
                            [issuer:Google\Auth\OAuth2:private] => 108715515230-g8e7tjh2d7luiggtfes6fsdv17n794hu.apps.googleusercontent.com
                            [audience:Google\Auth\OAuth2:private] => 
                            [sub:Google\Auth\OAuth2:private] => 
                            [expiry:Google\Auth\OAuth2:private] => 3600
                            [signingKey:Google\Auth\OAuth2:private] => 
                            [signingAlgorithm:Google\Auth\OAuth2:private] => 
                            [refreshToken:Google\Auth\OAuth2:private] => 
                            [accessToken:Google\Auth\OAuth2:private] => 
                            [idToken:Google\Auth\OAuth2:private] => 
                            [expiresIn:Google\Auth\OAuth2:private] => 
                            [expiresAt:Google\Auth\OAuth2:private] => 
                            [issuedAt:Google\Auth\OAuth2:private] => 
                            [grantType:Google\Auth\OAuth2:private] => 
                            [extensionParams:Google\Auth\OAuth2:private] => Array
                                (
                                )

                        )

                    [http:Google_Client:private] => 
                    [cache:Google_Client:private] => 
                    [token:Google_Client:private] => 
                    [config:Google_Client:private] => Array
                        (
                            [application_name] => 
                            [base_path] => https://www.googleapis.com
                            [client_id] => 108715515230-g8e7tjh2d7luiggtfes6fsdv17n794hu.apps.googleusercontent.com
                            [client_secret] => Ab-DiaYYRnVSFf8JGay-TIMN
                            [redirect_uri] => http://localhost:81/FileTransfer/src/testik.php?auth
                            [state] => 
                            [developer_key] => 
                            [use_application_default_credentials] => 
                            [signing_key] => 
                            [signing_algorithm] => 
                            [subject] => 
                            [hd] => 
                            [prompt] => 
                            [openid.realm] => 
                            [include_granted_scopes] => 
                            [login_hint] => 
                            [request_visible_actions] => 
                            [access_type] => offline
                            [approval_prompt] => auto
                            [retry] => Array
                                (
                                )

                            [cache_config] => Array
                                (
                                )

                            [token_callback] => 
                        )

                    [logger:Google_Client:private] => 
                    [deferExecution:Google_Client:private] => 
                    [requestedScopes:protected] => Array
                        (
                            [0] => https://www.googleapis.com/auth/drive
                        )

                )

            [authUrl:GoogleAuthorize:private] => 

    https://accounts.google.com/o/oauth2/auth?response_type=code&access_type=offline&client_id=108715515230-g8e7tjh2d7luiggtfes6fsdv17n794hu.apps.googleusercontent.com&redirect_uri=http%3A%2F%2Flocalhost%3A81%2FFileTransfer%2Fsrc%2Ftestik.php%3Fauth&state&scope=https%3A%2F%2Fwww.googleapis.com%2Fauth%2Fdrive&approval_prompt=auto
                [token:GoogleAuthorize:private] => 
            )

)

Answer 1

include 'googleauthorize.php';
include 'googleTransfer.php';


if (session_status() == PHP_SESSION_NONE) {
    session_start();
}
if (isset($_REQUEST['logout']))
    unset($_SESSION['auth']);


if(isset($_REQUEST['auth']) || isset($_REQUEST['upload'])){

    if(!isset($_SESSION['auth']){

    $_SESSION['auth'] = new GoogleAuthorize(__DIR__ . '/../oauth-credentials.json', 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']."?auth", "https://www.googleapis.com/auth/drive");
    //Get authorize URL
    $authUrl = $_SESSION['auth']->obtainAuthorizeUrl();

    //Redirect  
    if(!isset($_GET['code'])){
        $_SESSION['auth']->redirect($authUrl);
    }
    //Authentificate and return token
    $_SESSION['token'] = $_SESSION['auth']->obtainAccessToken();
    if(!isset($_SESSION['refreshToken']))
    {
        $_SESSION['refreshToken'] = $_SESSION['auth']->getRefreshToken();
        //Call method to save token into DB
    }
}
if(isset($_REQUEST['upload'])){

    new googleTransfer($_SESSION['auth']->getGoogleClient());

    }
}

Answer 2

    include 'googleauthorize.php';
    include 'googleTransfer.php';


    if (session_status() == PHP_SESSION_NONE) {
        session_start();
    }
    if (isset($_REQUEST['logout']))
        unset($_SESSION['auth']);


    if(isset($_REQUEST['auth'])){

    // You have initialize the session variable auth here.


        $_SESSION['auth'] = new GoogleAuthorize(__DIR__ . '/../oauth-credentials.json', 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF']."?auth", "https://www.googleapis.com/auth/drive");
        //Get authorize URL
        $authUrl = $_SESSION['auth']->obtainAuthorizeUrl();

        //Redirect  
        if(!isset($_GET['code'])){
            $_SESSION['auth']->redirect($authUrl);
        }

        $_SESSION['token'] = $_SESSION['auth']->obtainAccessToken();
        if(!isset($_SESSION['refreshToken']))
        {
            $_SESSION['refreshToken'] = $_SESSION['auth']->getRefreshToken();
            //Call method to save token into DB
        }
    }elseif(isset($_REQUEST['upload'])){
         // but how will it set here? when not having value? You have put the //session initialize here also.

            $_SESSION['auth'] = new GoogleAuthorize(__DIR__ . '/../oauth-credentials.json', 'http://' . $_SERVER['HTTP_HOST'] . $_SERVER['PHP_SELF'], "https://www.googleapis.com/auth/drive");


     if(isset($_SESSION['auth']))
        {
        $_SESSION['auth']->setAccessToken($_SESSION['token']);
    }
        //Initialize new object for file transfer
        new googleTransfer($_SESSION['auth']->getGoogleClient());       
}