我使用由dropbox提供的php sdk来获取用户的图像。一切正常。当用户来到我的网站并点击dropbox按钮时，它首先要求身份验证，然后导入用户的图像。由于这个过程，用户也自动登录到dropbox.com。这是预期的行为。
但是经过所有这些过程，如果用户从dropbox.com注销，然后再次点击我网站上的dropbox按钮，我认为我的应用程序应该要求认证，但它不要求认证，而是提供用户dropbox帐户中的图像。
如果我没有说清楚，请询问更多细节。
提前谢谢你。
编辑:index . php
<?php
/***********************************************************************
* Plugin Name: Dropbox Plugin
* Plugin URI: http://www.picpixa.com/
* Version: 1.0
* Author: Ashish Shah
* Description: Plugin To Import Images From User's Dropbox Account
**********************************************************************/
session_start();
include_once '/home/picpixa/wp-config.php';
//ini_set("display_errors",1);
?>
<!-- Bootstrap -->
<link href='https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/css/bootstrap.css' rel='stylesheet'>
<link href='https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/css/style.css' rel='stylesheet'>
<style>
.loader {
position: fixed;
left: 0px;
top: 0px;
width: 100%;
height: 100%;
z-index: 9999;
background: url('https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/Images/page-loader.gif') 50% 50% no-repeat rgb(249,249,249);
}
</style>
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
<script type="text/javascript">
$(window).load(function() {
$(".loader").fadeOut("slow");
});
//creating dynamic back button
//var docRef = document.referrer;
//$('#backBtn').html('<a href="' + docRef + '">Go Back</a>');
//alert('<a href="' + docRef + '">Go Back</a>');
/* Not in use
//This function will call on the click event of <div class='row'>
function loadBackBtn()
{
$('#backBtn').html('<a class="btn btn-primary" href="' + document.referrer + '">Back</a>');
}
//document.write('<a class='btn btn-primary' href="' + document.referrer + '">Back</a>');*/
</script>
<script>
function loader(){
$('#load').show();
}
/*function loadExistingImages(){
window.opener.$('#loader_img').show();
result=null;
window.opener.$('#fileupload').each(function () {
var that = this;
window.opener.$.getJSON(this.action, function (result) {
if (result && result.length) {
window.opener.$(that).fileupload('option', 'done')
.call(that, null, {result: result});
//console.log('ss='+$('.table-striped tbody').find('.btn-danger').length);
if(window.opener.$('.table-striped .files').find('.btn-danger').length>0){
window.opener.$('.coo-images-other-buttons').show();
}else{
window.opener.$('.coo-images-other-buttons').hide();
}
}
window.opener.$('#loader_img').hide();
if (window.opener.$('.table-striped.files').children().length > 0)
{
window.opener.$('.table_tagline').show();
}
});
});
}*/
</script>
<!-- Adding this block to allow to see the login page like other social media -->
<!-- Login Block Start -->
<?php /*
if(isset($_SESSION['comingFirstTime']) && $_SESSION['comingFirstTime']==true)
{
?>
<div id="load" class="loader"></div>
<div id="wrap">
<div class="header">
<h4>Dropbox</h4>
</div>
<div class="cl"></div>
<div id="middal_part">
<div class="left_side">
<img src="Images/dropbox.jpg"/>
</div>
<div class="right_side">
<a class='btn btn-primary' href="<?php echo $loginUrl ?>" onclick="loader()">Login</a><br><br>
<button class="btn btn-primary close_window" type="button" onClick="window.close();">Close</button>
</div>
<div class="cl"></div>
</div>
</div>
<?php
$_SESSION['comingFirstTime'] = false;
die;
}*/
?>
<!-- Login Block End -->
<script type="text/javascript">$('#load').hide();</script>
<?php
if(isset($_POST['copy']) && $_POST['dropbox'])
{
$imgArray = $_POST['dropbox'];
$current_user = wp_get_current_user();
if(isset($current_user->ID) && trim($current_user->ID)!='' && trim($current_user->ID)!=0){
$extraSessionStr = 'usr-'.md5($current_user->ID).'/';
$user = $current_user->ID;
}else{
$sesstionId = session_id();
$user = $sesstionId;
$extraSessionStr = $sesstionId.'/';
}
foreach ($imgArray as $img)
{
//Getting a file name
$imgInfo = pathinfo($img); //This will become an array with keys ('dirname','basename','extension','filename')
$oriFileName=$imgInfo['filename'];//Getting a file name without extension
$fileName = (string) $oriFileName.".".$imgInfo['extension'];//Creating a file name with extension
//Check weather the file is exists or not rename the file if exists
$i=1;
if(file_exists('/home/picpixa/server/php/files/'.$extraSessionStr.$fileName)){
while(file_exists('/home/picpixa/server/php/files/'.$extraSessionStr.$fileName)){
$fileName = (string) $oriFileName."(".$i.").".$imgInfo['extension'];
$i++;
}
}
// Read file content
$file_content = file_get_contents($img);
file_put_contents('/home/picpixa/server/php/files/'.$extraSessionStr.$fileName, $file_content);
//file_put_contents('/home/picpixa/server/php/thumbnails/'.$extraSessionStr.$fileName, $file_content);
/* To create thumbnail */
// Max vert or horiz resolution
$maxsize=80;
// create new Imagick object
$image = new Imagick($img); //"input_image_filename_and_location"
// Resizes to whichever is larger, width or height
if($image->getImageHeight() <= $image->getImageWidth())
{
// Resize image using the lanczos resampling algorithm based on width
$image->resizeImage($maxsize,0,Imagick::FILTER_LANCZOS,1);
}
else
{
// Resize image using the lanczos resampling algorithm based on height
$image->resizeImage(0,$maxsize,Imagick::FILTER_LANCZOS,1);
}
// Set to use jpeg compression
$image->setImageCompression(Imagick::COMPRESSION_JPEG);
// Set compression level (1 lowest quality, 100 highest quality)
$image->setImageCompressionQuality(75);
// Strip out unneeded meta data
$image->stripImage();
// Writes resultant image to output directory
$image->writeImage('/home/picpixa/server/php/thumbnails/'.$extraSessionStr.$fileName); //"output_image_filename_and_location"
// Destroys Imagick object, freeing allocated resources in the process
$image->destroy();
}
?>
<script type="text/javascript">
window.opener.$('tbody.files').find('tr').remove();
//loadExistingImages();
var myVar;
if (/(MSIE' [0-9]{1})/i.test(navigator.userAgent)) {
window.opener.$(window.opener.loadExistingFiles());
myVar = setTimeout(function(){
window.opener.$('tbody.files').find('tr .preview a[title="<?php echo $fileName;?>"]').click();
},1000);
}
else{
window.opener.$.when(window.opener.loadExistingFiles()).done(function(){
myVar = setTimeout(function(){
window.opener.$('tbody.files').find('tr .preview a[title="<?php echo $fileName;?>"]').click();
},1000);
});
}
</script>
<?php
echo "<h2>The selected images have been uploaded successfully.</h2>";
//echo "<h3>Please click on '"Proceed With Uploaded Images'" button to Proceed OR ";
//echo "Click on the '"Upload More Images'" Button to upload more images.</h3>";
?>
<div class="modal-footer">
<input type='button' name='continue' value='Upload More Images' class='btn btn-primary' onclick='loader();window.location.href="https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/index.php/";'>
<!-- <input type='button' name='closeWindow' value='Close' class='btn btn-primary pading' onClick="window.close();"> -->
</div>
<?php
die();
}
elseif (isset($_POST['copy']))
{
echo "<h2>You have not selected any image(s) to move.</h2><br><br>";
//echo "<h3>Please click on '"Close'" button to Close the window OR ";
//echo "Click on the '"Upload Images'" Button to upload images.</h3>";
?>
<div class="modal-footer">
<input type='button' name='continue' value='Upload Images' class='btn btn-primary' onclick='loader();window.location.href="https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/index.php/";'>
<!-- <input type='button' name='closeWindow' value='Close' class='btn btn-primary pading' onClick="window.close();"> -->
</div>
<?php
die();
}
require_once __DIR__.'/dropbox-sdk/Dropbox/strict.php';
$appInfoFile = __DIR__."/AppInfo.json";
// NOTE: You should be using Composer's global autoloader. But just so these examples
// work for people who don't have Composer, we'll use the library's "autoload.php".
require_once __DIR__.'/dropbox-sdk/Dropbox/autoload.php';
use 'Dropbox as dbx;
$requestPath = init();
if ($requestPath === "/") {
$dbxClient = getClient();
if ($dbxClient === false) {
$loginUrl = getPath("dropbox-auth-start");
/*$loginPage = <<<login
<div id="load" class="loader"></div>
<div id="wrap">
<div class="header">
<h4>Dropbox</h4>
<p>Display Your Photo Stream</p>
</div>
<div class="cl"></div>
<div id="middal_part">
<div class="left_side">
<img src="https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/Images/dropbox.jpg"/>
</div>
<div class="right_side">
<a class='btn btn-primary' href="$loginUrl" onclick="loader()">Login</a>
<button class="btn btn-primary close_window" type="button" onClick="window.close();">Close</button>
</div>
<div class="cl"></div>
</div>
</div>
login;*/
$loginPage = <<<login
<div id="load" class="loader"></div>
<div id="wrap">
<div class="header">
<h4>Dropbox</h4>
<p>Display Your Photo Stream</p>
</div>
<div class="cl"></div>
<div id="middal_part">
<div class="left_side">
<img src="https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/Images/dropbox.jpg"/>
</div>
<div class="right_side">
<a class='btn btn-primary' href="$loginUrl" onclick="loader()">Login</a>
</div>
<div class="cl"></div>
</div>
</div>
login;
echo $loginPage;
//header("Location: ".getPath("dropbox-auth-start"));
exit;
}
$path = "/";
if (isset($_GET['path'])) $path = $_GET['path'];
$entry = $dbxClient->getMetadataWithChildren($path);
if ($entry['is_dir']) {
echo renderFolder($entry);
}
else {
echo renderFile($entry);
}
}
else if ($requestPath == "/download") {
$dbxClient = getClient();
if ($dbxClient === false) {
header("Location: ".getPath("dropbox-auth-start"));
exit;
}
if (!isset($_GET['path'])) {
header("Location: ".getPath(""));
exit;
}
$path = $_GET['path'];
$fd = tmpfile();
$metadata = $dbxClient->getFile($path, $fd);
header("Content-Type: $metadata[mime_type]");
fseek($fd, 0);
fpassthru($fd);
fclose($fd);
}
else if ($requestPath === "/upload") {
if (empty($_FILES['file']['name'])) {
echo renderHtmlPage("Error", "Please choose a file to upload");
exit;
}
if (!empty($_FILES['file']['error'])) {
echo renderHtmlPage("Error", "Error ".$_FILES['file']['error']." uploading file. See <a href='http://php.net/manual/en/features.file-upload.errors.php'>the docs</a> for details");
exit;
}
$dbxClient = getClient();
$remoteDir = "/";
if (isset($_POST['folder'])) $remoteDir = $_POST['folder'];
$remotePath = rtrim($remoteDir, "/")."/".$_FILES['file']['name'];
$fp = fopen($_FILES['file']['tmp_name'], "rb");
$result = $dbxClient->uploadFile($remotePath, dbx'WriteMode::add(), $fp);
fclose($fp);
$str = print_r($result, TRUE);
echo renderHtmlPage("Uploading File", "Result: <pre>$str</pre>");
}
else if ($requestPath === "/dropbox-auth-start") {
$authorizeUrl = getWebAuth()->start();
header("Location: $authorizeUrl");
}
else if ($requestPath === "/dropbox-auth-finish") {
try {
list($accessToken, $userId, $urlState) = getWebAuth()->finish($_GET);
// We didn't pass in $urlState to finish, and we're assuming the session can't be
// tampered with, so this should be null.
assert($urlState === null);
}
catch (dbx'WebAuthException_BadRequest $ex) {
respondWithError(400, "Bad Request");
// Write full details to server error log.
// IMPORTANT: Never show the $ex->getMessage() string to the user -- it could contain
// sensitive information.
error_log("/dropbox-auth-finish: bad request: " . $ex->getMessage());
exit;
}
catch (dbx'WebAuthException_BadState $ex) {
// Auth session expired. Restart the auth process.
header("Location: ".getPath("dropbox-auth-start"));
exit;
}
catch (dbx'WebAuthException_Csrf $ex) {
respondWithError(403, "Unauthorized", "CSRF mismatch");
// Write full details to server error log.
// IMPORTANT: Never show the $ex->getMessage() string to the user -- it contains
// sensitive information that could be used to bypass the CSRF check.
error_log("/dropbox-auth-finish: CSRF mismatch: " . $ex->getMessage());
exit;
}
catch (dbx'WebAuthException_NotApproved $ex) {
echo renderHtmlPage("Not Authorized?", "Why not?");
exit;
}
catch (dbx'WebAuthException_Provider $ex) {
error_log("/dropbox-auth-finish: unknown error: " . $ex->getMessage());
respondWithError(500, "Internal Server Error");
exit;
}
catch (dbx'Exception $ex) {
error_log("/dropbox-auth-finish: error communicating with Dropbox API: " . $ex->getMessage());
respondWithError(500, "Internal Server Error");
exit;
}
// NOTE: A real web app would store the access token in a database.
$_SESSION['access-token'] = $accessToken;
echo renderHtmlPage("Authorized!",
"Authorization complete, <a href='".htmlspecialchars(getPath(""))."' onclick='loader()'>click here</a> to browse.");
}
else if ($requestPath === "/dropbox-auth-unlink") {
// "Forget" the access token.
unset($_SESSION['access-token']);
//$_SESSION = array();
/*echo renderHtmlPage("Logged Out",
"<div class='modal-footer'>
You have been logged out.<br>
<input type='button' name='login' value='Login Again' class='btn btn-primary' onClick='location.href = '"https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/index.php/'";'>
<input type='button' name='closeWindow' value='Close' class='btn btn-primary pading' onClick='window.close();'>
</div>"
);*/
echo renderHtmlPage("Logged Out",
"<div class='modal-footer'>
You have been logged out.<br>
<input type='button' name='login' value='Login Again' class='btn btn-primary' onClick='location.href = '"https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/index.php/'";'>
</div>"
);
}
else {
echo renderHtmlPage("Bad URL", "No handler for $requestPath");
exit;
}
function renderFolder($entry)
{
/*echo "entry:<pre>";
print_r($entry);
echo "</pre>entry end.<br>Session:<pre>";
print_r($_SESSION);
echo "</pre>Session end.";
die;*/
$dbxClient = getClient();//Using to use the createTemporaryDirectLink() function
// TODO: Add a token to counter CSRF attacks.
// $upload_path = htmlspecialchars(getPath('upload'));
//$path = htmlspecialchars($entry['path']);
//$form = <<<HTML <form action='$upload_path' method='post' enctype='multipart/form-data'> <label for='file'>Upload file:</label> <input name='file' type='file'/> <input type='submit' value='Upload'/> <input name='folder' type='hidden' value='$path'/> </form> HTML;
//$form = <<<HTML HTML;
$listing_folder = '';
$listing_folder .= "<div class='container'>
<div class='row'>
<div class='col-lg-12 col-md-12 col-sm-12 col-xs-12'>
<div style='clear: both;'></div>
<div class='modal-body'>";
$listing = "<div id='load' class='loader'></div>
<div class='container'>
<div class='row'>
<div class='col-lg-12 col-md-12 col-sm-12 col-xs-12'>
<div style='clear: both;'></div>";
/*//This section is to display logout button
if(isset($entry['contents']) && $entry['contents']){
$listing .= "<div class='modal-footer'>
<script>
function goDirect(){
window.location.href='dropbox-auth-unlink';
}
</script>
<input type='button' name='logout' value='Logout' class='btn btn-primary' onclick='goDirect()'>
</div>";
}*/
$listing .= "<form method='POST' action=''>
<div class='modal-body imgAlignment'>";
$i=0;
$showBtn=False;
foreach($entry['contents'] as $child) {
$type='Folder';
$cp = $child['path'];
$cn = basename($cp);
if (!$child['is_dir']){
$type=$child['mime_type'];
}
$cp = htmlspecialchars($cp);
$link = getPath("?path=".htmlspecialchars($cp));
if ($child['is_dir']){
$listing_folder .= "<div class='baby_img'>
<a style='text-decoration: none' href='$link'>
<img src='https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/Images/folder.jpeg' style='margin: 0px 5px 0 10px !important; width:100px !important; height:100px !important; padding: 0 5px 10px 10px !important;display: block !important;clear: left !important;float: left !important;'>
<div style='clear: both;'></div>
<p style='margin: 0px 5px 0 10px !important; padding: 0 0 0 0 !important;'>$cn</p>
</a>
</div>";
$cn .= '/';
}
else{
if(strcmp($type,'image/*')==1){
$img = $dbxClient->createTemporaryDirectLink($cp);
$listing .= "<div class='baby_img'>
<input type='checkbox' id='dropbox_".$i."' name='dropbox[]' value='".$img[0]."' class='styled' />";
$listing .= "<img src='".$img[0]."' class='img-responsive' style='width:100px !important; height:100px !important;'/>";
$listing .= '</div>';
$i++;
$showBtn=true;
}
}
}
$listing .= '<div class="clearfix"></div>
<div class="modal-footer btnAlignment">';
if($showBtn){
$listing .= "<input type='submit' name='copy' value='Copy Selected Files' class='btn btn-primary' onclick='loader();'>";
}
//$listing .= "<input type='button' name='closeWindow' value='Close This Window' class='btn btn-primary pading' onClick='window.close();'>";
$listing .= '</div>
</div>';
$listing .= "</form>
</div>
</div>
</div>";
$listing_folder .= "</div>
</div>
</div>
</div>";
return renderHtmlPage("App/picpixa$entry[path]", $listing_folder.$listing);
}
function getAppConfig()
{
global $appInfoFile;
try {
$appInfo = dbx'AppInfo::loadFromJsonFile($appInfoFile);
}
catch (dbx'AppInfoLoadException $ex) {
throw new Exception("Unable to load '"$appInfoFile'": " . $ex->getMessage());
}
$clientIdentifier = "examples-web-file-browser";
$userLocale = null;
return array($appInfo, $clientIdentifier, $userLocale);
}
function getClient()
{
if(!isset($_SESSION['access-token'])) {
return false;
}
list($appInfo, $clientIdentifier, $userLocale) = getAppConfig();
$accessToken = $_SESSION['access-token'];
return new dbx'Client($accessToken, $clientIdentifier, $userLocale, $appInfo->getHost());
}
function getWebAuth()
{
list($appInfo, $clientIdentifier, $userLocale) = getAppConfig();
$redirectUri = getUrl("dropbox-auth-finish");
$csrfTokenStore = new dbx'ArrayEntryStore($_SESSION, 'dropbox-auth-csrf-token');
return new dbx'WebAuth($appInfo, $clientIdentifier, $redirectUri, $csrfTokenStore, $userLocale);
}
function renderFile($entry)
{
$metadataStr = htmlspecialchars(print_r($entry, true));
$downloadPath = getPath("download?path=".htmlspecialchars($entry['path']));
$body = <<<HTML
<pre>$metadataStr</pre>
<a href="$downloadPath">Download this file</a>
HTML;
return renderHtmlPage("File: ".$entry['path'], $body);
}
function renderHtmlPage($title, $body)
{
$output = <<<HTML
<html>
<head>
<meta charset='utf-8'>
<meta http-equiv='X-UA-Compatible' content='IE=edge'>
<meta name='viewport' content='width=device-width, initial-scale=1'>
<title>$title</title>
<!-- Bootstrap -->
<link href='https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/css/bootstrap.css' rel='stylesheet'>
<link href='https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/css/style.css' rel='stylesheet'>
</head>
<body>
HTML;
$permLink = "https://www.picpixa.com/wp-content/plugins/create-own-object/plugin-dropbox/index.php/";
if(isset($_GET) && $_GET['path'] && $_GET != "/")
{
$path = $_GET['path'];
$filename = substr(strrchr($path, "/"), 1);
$newPath = $permLink."?path=".str_replace('/'.$filename,'',$path);
if($newPath == $permLink."?path="){
//Setting the newPath to the root path if there there is first folder
$newPath = $permLink;
}
$output .= "<br><div class='container'>
<div class='row'>
<div class='col-lg-12 col-md-12 col-sm-12 col-xs-12'>
<a href = '".$newPath."' class='btn btn-primary pading'>Back</a>
</div>
</div>
</div>";
}
$output .= <<<HTML
$body
</body>
</html>
HTML;
return $output;
}
function respondWithError($code, $title, $body = "")
{
$proto = $_SERVER['SERVER_PROTOCOL'];
header("$proto $code $title", true, $code);
echo renderHtmlPage($title, $body);
}
function getUrl($relative_path)
{
if (isset($_SERVER['HTTPS']) && $_SERVER['HTTPS'] !== 'off') {
$scheme = "https";
} else {
$scheme = "http";
}
$host = $_SERVER['HTTP_HOST'];
$path = getPath($relative_path);
return $scheme."://".$host.$path;
}
function getPath($relative_path)
{
if (PHP_SAPI === 'cli-server') {
return "/".$relative_path;
} else {
return $_SERVER["SCRIPT_NAME"]."/".$relative_path;
}
}
function init()
{
global $argv;
// If we were run as a command-line script, launch the PHP built-in web server.
if (PHP_SAPI === 'cli') {
launchBuiltInWebServer($argv);
assert(false);
}
if (PHP_SAPI === 'cli-server') {
// For when we're running under PHP's built-in web server, do the routing here.
return $_SERVER['SCRIPT_NAME'];
}
else {
// For when we're running under CGI or mod_php.
if (isset($_SERVER['PATH_INFO'])) {
return $_SERVER['PATH_INFO'];
} else {
return "/";
}
}
}
function launchBuiltInWebServer($argv)
{
// The built-in web server is only available in PHP 5.4+.
if (version_compare(PHP_VERSION, '5.4.0', '<')) {
fprintf(STDERR,
"Unable to run example. The version of PHP you used to run this script (".PHP_VERSION.")<br>".
"doesn't have a built-in web server. You need PHP 5.4 or newer.<br>".
"<br>".
"You can still run this example if you have a web server that supports PHP 5.3.<br>".
"Copy the Dropbox PHP SDK into your web server's document path and access it there.<br>");
exit(2);
}
$php_file = $argv[0];
if (count($argv) === 1) {
$port = 5000;
} else if (count($argv) === 2) {
$port = intval($argv[1]);
} else {
fprintf(STDERR,
"Too many arguments.<br>".
"Usage: php $argv[0] [server-port]<br>");
exit(1);
}
$host = "localhost:$port";
$cmd = escapeshellarg(PHP_BINARY)." -S ".$host." ".escapeshellarg($php_file);
$descriptors = array(
0 => array("pipe", "r"), // Process' stdin. We'll just close this right away.
1 => STDOUT, // Relay process' stdout to ours.
2 => STDERR, // Relay process' stderr to ours.
);
$proc = proc_open($cmd, $descriptors, $pipes);
if ($proc === false) {
fprintf(STDERR,
"Unable to launch PHP's built-in web server. Used command:<br>".
" $cmd<br>");
exit(2);
}
fclose($pipes[0]); // Close the process' stdin.
$exitCode = proc_close($proc); // Wait for process to exit.
exit($exitCode);
}
?>
"但是经过所有这些过程，如果用户从dropbox.com注销，然后再次点击我网站上的dropbox按钮，我认为我的应用程序应该要求认证"。
你的网站正在记住用户，因为你正在使用会话来这样做。如果你不想记住用户，那就停止这样做。: -)
一般来说，用户退出一个网站对他们在其他网站的会话没有影响。因此，用户退出dropbox.com对他们在您的网站上的登录状态没有影响。也许您想在会话上设置过期时间，以便强制用户在一段时间后重新进行身份验证?或者根本不能使用会话(即不存储访问令牌)，在这种情况下，用户必须在每次加载页面时重新进行身份验证?
编辑
这是你分享的记住用户的代码:
if ($requestPath === "/") {
$dbxClient = getClient();
if ($dbxClient === false) {
$loginUrl = getPath("dropbox-auth-start");
...
function getClient()
{
if(!isset($_SESSION['access-token'])) {
return false;
}
list($appInfo, $clientIdentifier, $userLocale) = getAppConfig();
$accessToken = $_SESSION['access-token'];
return new dbx'Client($accessToken, $clientIdentifier, $userLocale, $appInfo->getHost());
}