php - 找不到类 'FacebookSession' - API Facebook 4.0

Question

我正在尝试新的 Facebook API (4.0)，但我遇到了严重的问题。

我的页面loginUser.php的代码是:

<?php
require_once("autoload_fb.php");


// init app with app id and secret
FacebookSession::setDefaultApplication( '647345538685342','6ea4dc94874b31a637b6fe368bcfba76' );

// login helper with redirect_uri
$helper = new FacebookRedirectLoginHelper( 'http://www.radiobrunoestate.mumbleserver.it/api/loginUser' );

// see if a existing session exists
if ( isset( $_SESSION ) && isset( $_SESSION['fb_token'] ) ) {
  // create new session from saved access_token
  $session = new FacebookSession( $_SESSION['fb_token'] );

  // validate the access_token to make sure it's still valid
  try {
    if ( !$session->validate() ) {
      $session = null;
    }
  } catch ( Exception $e ) {
    // catch any exceptions
    $session = null;
  }

} else {
  // no session exists

  try {
    $session = $helper->getSessionFromRedirect();
  } catch( FacebookRequestException $ex ) {
    // When Facebook returns an error
  } catch( Exception $ex ) {
    // When validation fails or other local issues
    echo $ex->message;
  }

}

// see if we have a session
if ( isset( $session ) ) {

  // save the session
  $_SESSION['fb_token'] = $session->getToken();
  // create a session using saved token or the new one we generated at login
  $session = new FacebookSession( $session->getToken() );

  // graph api request for user data
  $request = new FacebookRequest( $session, 'GET', '/me' );
  $response = $request->execute();
  // get response
  $graphObject = $response->getGraphObject()->asArray();

  // print profile data
  echo '<pre>' . print_r( $graphObject, 1 ) . '</pre>';

  // print logout url using session and redirect_uri (logout.php page should destroy the session)
  echo '<a href="' . $helper->getLogoutUrl( $session, 'http://yourwebsite.com/app/logout.php' ) . '">Logout</a>';

} else {
  // show login url
  echo '<a href="' . $helper->getLoginUrl( array( 'email', 'user_friends' ) ) . '">Login</a>';
  }
?>

autoload_fb.php 很简单:

<?php
    session_start();

    require_once( 'Facebook/FacebookSession.php' );
    require_once( 'Facebook/FacebookRedirectLoginHelper.php' );
    require_once( 'Facebook/FacebookRequest.php' );
    require_once( 'Facebook/FacebookResponse.php' );
    require_once( 'Facebook/FacebookSDKException.php' );
    require_once( 'Facebook/FacebookRequestException.php' );
    require_once( 'Facebook/FacebookAuthorizationException.php' );
    require_once( 'Facebook/GraphObject.php' );

    use Facebook\FacebookSession;
    use Facebook\FacebookRedirectLoginHelper;
    use Facebook\FacebookRequest;
    use Facebook\FacebookResponse;
    use Facebook\FacebookSDKException;
    use Facebook\FacebookRequestException;
    use Facebook\FacebookAuthorizationException;
    use Facebook\GraphObject;
?>

我在第一台服务器上收到此错误:

Fatal error: Class 'FacebookSession' not found in /home/jack/provaprova/api/loginUser.php on line 6

在另一台服务器上测试相同的代码我有这个错误:

Parse error: syntax error, unexpected T_OBJECT_OPERATOR in /home/eyikmdnu/public_html/jack/provaprova/api/Facebook/FacebookSession.php on line 140

问题出在哪里？可能是服务器配置的问题？

谢谢

Answer 1

Facebook PHP SDK v4 需要 PHP 5.4。您很可能使用的是旧版本的 PHP。