使用php 4异步上传图像/视频到facebook

Question

我试图用php 4异步地将视频/图像上传到facebook相册，我在谷歌上搜索发现，php异步调用是使用fsockopen发送的。然而，它并不适用于facebook的请求。我有两个文件，一个用来检查登录和获取令牌。然后调用第二个文件将文件上传到facebook。下面是第一个文件的代码：

// start session
session_start();

Yii::import('application.vendor.*');
require_once('facebook-4/autoload.php');

use Facebook\HttpClients\FacebookHttpable;
use Facebook\HttpClients\FacebookCurl;
use Facebook\HttpClients\FacebookCurlHttpClient;

use Facebook\Entities\AccessToken;
use Facebook\Entities\SignedRequest;

use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookOtherException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphSessionInfo;


// init app with app id and secret
FacebookSession::setDefaultApplication('xxxxx', 'yyyy');

// login helper with redirect_uri
$helper = new FacebookRedirectLoginHelper( 'http://website.com/user/login/page/view/fb-share-php1' );

// 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;
    }
}

if ( !isset( $session ) || $session === null ) {
    // no session exists
    try {
        $session = $helper->getSessionFromRedirect();
    } catch( FacebookRequestException $ex ) {
    // When Facebook returns an error
    // handle this better in production code
    print_r( $ex );
    } catch( Exception $ex ) {
        // When validation fails or other local issues
        // handle this better in production code
        print_r( $ex );
    }
}

// see if we have a session
if ( isset( $session ) ) {
    // save the session
    $_SESSION['fb'] = $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 = $request->execute();
    backgroundPost('http://website.com/user/login/page/view/fb-share-php');
    // get response
    //$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://website.com/user/login/page/view/fb-share-php1' ) . '">Logout</a>';
}else {
    // show login url
    echo '<a href="' . $helper->getLoginUrl( array( 'email', 'user_friends' ) ) . '">Login</a>';
}
function backgroundPost($url){
    $parts=parse_url($url);
    //print_r($parts);exit;

    $fp = fsockopen($parts['host'],
            isset($parts['port'])?$parts['port']:80,
            $errno, $errstr, 30);

    if (!$fp) {
        echo "test";
        return false;
    } else {
        $out = "POST ".$parts['path']." HTTP/1.1\r\n";
        $out.= "Host: ".$parts['host']."\r\n";
        $out.= "Content-Type: application/x-www-form-urlencoded\r\n";
        $out.= "Content-Length: ". 0 ."\r\n";
        $out .= "Cookie: PHPSESSID=" . $_COOKIE['PHPSESSID'] . "\r\n";
        $out .= "Connection: Close\r\n\r\n";
        if (isset($parts['query'])) $out.= $parts['query'];
        // print_r($out);exit;
        fwrite($fp, $out);
        fclose($fp);
        return true;
    }
}

第二个文件是：

 // start session
session_start();
Yii::import('application.vendor.*');
require_once('facebook-4/autoload.php');

use Facebook\HttpClients\FacebookHttpable;
use Facebook\HttpClients\FacebookCurl;
use Facebook\HttpClients\FacebookCurlHttpClient;

use Facebook\Entities\AccessToken;
use Facebook\Entities\SignedRequest;

use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookOtherException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphSessionInfo;



$session = $_SESSION['fb'] ;
file_put_contents('file.txt', serialize($session));
try {

    // Upload to a user's profile. The photo will be in the
    // first album in the profile. You can also upload to
    // a specific album by using /ALBUM_ID as the path
    $response = (new FacebookRequest(
            $session, 'POST', '/me/photos', array(
                    'source' => '@/var/www/website-root/images/add_more.png',
                    'message' => 'User provided message'
            )
    ))->execute()->getGraphObject();
    file_put_contents('files.txt', serialize($session));
    // If you're not using PHP 5.5 or later, change the file reference to:
    // 'source' => '@/path/to/file.name'

    //echo "Posted with id: " . $response->getProperty('id');

} catch(FacebookRequestException $e) {

    echo "Exception occured, code: " . $e->getCode();
    echo " with message: " . $e->getMessage();

}

Answer 1

最后，我想出了实现这个目标的方法。现在，我正在使用和php。以下是这一过程：

1)从javascript (第一个文件)获取访问令牌，并将其与图像/视频的url一起传递给后台。如果通过源上传图像/视频，代码可能会被修改。

2) php文件(第二个文件)，包含用于执行后端进程(在第三个文件中)的函数，接收已发布的数据，并调用第三个文件(以url的形式)，并将数据传递给它。

3)文件通过php sdk 4(第三个文件)上传到facebook

下面是包含javascript代码的第一个文件的代码：

    <script> 

      (function(d, s, id){
         var js, fjs = d.getElementsByTagName(s)[0];
         if (d.getElementById(id)) {return;}
         js = d.createElement(s); js.id = id;
         js.src = "//connect.facebook.net/en_US/sdk.js";
         fjs.parentNode.insertBefore(js, fjs);
       }(document, 'script', 'facebook-jssdk'));
        window.fbAsyncInit = function() {
        FB.init({
          appId      : 'your app id',
          xfbml      : true,
          version    : 'v2.0'
        });
        FB.login(function(response){
            console.log(response);
            if (response.status === 'connected') {
                var data = new Array();

                alert('Logged into your app and Facebook.');
                //type: 0 for photo and type:1 for video. Create data array dynamically for real word applications
                data[0]= {url: 'http://url-of-video-file.mov',privacy : 'SELF', message: "title of video", type:1};
                data[1]= {url: 'http://url-to-image-file.png',privacy : 'SELF', message: "photo caption", type:0};
                $.ajax({
                    url: 'http://url-of-second-file/containing-code-for/backend-process',
                    data: {data: data, accessToken:response.authResponse.accessToken},
                    type: 'POST',
                    success:function(){
                        alert("photo uploaded");
                    }

                });


        },{scope:'email'});
    }

</script>

现在，接收数据并执行后端处理的第二个文件的代码：

<?php

//session_start();
ignore_user_abort(true);
set_time_limit(0);

function backgroundPost($url){
    $parts=parse_url($url);
    //print_r($parts);exit;

    $fp = fsockopen($parts['host'],
            isset($parts['port'])?$parts['port']:80,
            $errno, $errstr, 30);

    if (!$fp) {
        echo "test";
        return false;
    } else {
        $vars = $_POST;

        $content = http_build_query($vars);
        //file_put_contents('url.txt',$content);exit;
        $out = "POST ".$parts['path']." HTTP/1.1\r\n";
        $out.= "Host: ".$parts['host']."\r\n";
        $out.= "Content-Type: application/x-www-form-urlencoded\r\n";
        $out.= "Content-Length: ". strlen($content) ."\r\n";
        //$out .= "Cookie: PHPSESSID=" . $_COOKIE['PHPSESSID'] . "\r\n";
        $out .= "Connection: Close\r\n\r\n";
        if (isset($parts['query'])) $out.= $parts['query'];
        // print_r($out);exit;


        fwrite($fp, $out);
        fwrite($fp,$content);
        fclose($fp);
        return true;
    }
}
backgroundPost('http://link-to-third-file/containing-code-for-facebook-upload');

现在代码的第三个文件，这将实际上传的文件。请注意，视频文件需要下载，然后才能上传。

<?php 

// start session
//session_start();
error_reporting(1);
ignore_user_abort(true);
set_time_limit(0);
@ini_set('display_errors', 1);


//include facebook library through autoload
require_once('facebook-4/autoload.php');

use Facebook\HttpClients\FacebookHttpable;
use Facebook\HttpClients\FacebookCurl;
use Facebook\HttpClients\FacebookCurlHttpClient;

use Facebook\Entities\AccessToken;
use Facebook\Entities\SignedRequest;

use Facebook\FacebookSession;
use Facebook\FacebookRedirectLoginHelper;
use Facebook\FacebookRequest;
use Facebook\FacebookResponse;
use Facebook\FacebookSDKException;
use Facebook\FacebookRequestException;
use Facebook\FacebookOtherException;
use Facebook\FacebookAuthorizationException;
use Facebook\GraphObject;
use Facebook\GraphSessionInfo;

// init app with app id and secret
FacebookSession::setDefaultApplication('app_id','secret_key' );
$session = new FacebookSession( $_POST['accessToken'] );

foreach($_POST['data'] as $key => $data){
    if($data['type'] == 1){
        $ext = substr($data['url'],strrpos($data['url'],'.'));
        $file = '/path/to/temp/location/for/saving/video/'.time().$ext;
        if(file_put_contents($file,file_get_contents($data['url']))){
            try {

                // Upload to a user's profile. The photo will be in the
                // first album in the profile. You can also upload to
                // a specific album by using /ALBUM_ID as the path
                $response = (new FacebookRequest(
                        $session, 'POST', '/me/videos', array(
                                'source' =>  '@'.$file,
                                'title' => $data['message'],
                                'privacy' => json_encode(array('value' => $data['privacy'])),
                                'published' => true
                        )
                ))->execute()->getGraphObject()->asArray();

                // If you're not using PHP 5.5 or later, change the file reference to:
                // 'source' => '@/path/to/file.name'

                //echo "Posted with id: " . $response->getProperty('id');

            } catch(FacebookRequestException $e) {

                echo "Exception occured, code: " . $e->getCode();
                echo " with message: " . $e->getMessage();
            }
        }
    }else{
        try {

            // Upload to a user's profile. The photo will be in the
            // first album in the profile. You can also upload to
            // a specific album by using /ALBUM_ID as the path
            $response = (new FacebookRequest(
                    $session, 'POST', '/me/photos', array(
                            'url' =>  $data['url'],
                            'message' => $data['message'],
                            'privacy' => json_encode(array('value' => $data['privacy'])),
                            'published' => true
                    )
            ))->execute()->getGraphObject()->asArray();

            // If you're not using PHP 5.5 or later, change the file reference to:
            // 'source' => '@/path/to/file.name'

            //echo "Posted with id: " . $response->getProperty('id');

        } catch(FacebookRequestException $e) {

            echo "Exception occured, code: " . $e->getCode();
            echo " with message: " . $e->getMessage();
        }
    }
}
    ?>