Creating a Facebook App and get App ID & App Secret.<\/a><\/li>\n<\/ul>\nAfter completing the Facebook App creation and configuration you\u2019ll get the App ID and App secret. Copy this App ID<\/b> and App Secret<\/b> of your Facebook App for later use.<\/p>\nFacebook SDK for PHP v5.0<\/h2>\n
All Facebook PHP SDK files are included in the facebook-php-sdk\/<\/b> directory, place the facebook-php-sdk\/<\/code> folder into the root directory. You don\u2019t need to download it separately, Facebook SDK v5 is included in our source code.<\/p>\nFacebook API Configuration (fbConfig.php)<\/h2>\n
The fbConfig.php file is used to configure Facebook SDK and connect to Facebook Graph API. Specify your Facebook App ID ($appId<\/code>), App Secret ($appSecret<\/code>), Callback URL ($redirectURL<\/code>), and Permissions ($fbPermissions<\/code>) to connect with Facebook API and working with SDK.<\/p>\nNote that:<\/span> The access token must have the publish_actions<\/code> permission to post on Facebook wall.<\/p>\n<?php
<\/span>if(!<\/span>session_id<\/span>()){
<\/span>session_start<\/span>();
}
<\/span>\/\/ Include the autoloader provided in the SDK
<\/span>require_once <\/span>__DIR__ <\/span>. <\/span>'\/facebook-php-sdk\/autoload.php'<\/span>;
<\/span>\/\/ Include required libraries
<\/span>use <\/span>Facebook<\/span>\\<\/span>Facebook<\/span>;
use <\/span>Facebook<\/span>\\<\/span>Exceptions<\/span>\\<\/span>FacebookResponseException<\/span>;
use <\/span>Facebook<\/span>\\<\/span>Exceptions<\/span>\\<\/span>FacebookSDKException<\/span>;
<\/span>\/*
* Configuration and setup Facebook SDK
*\/
<\/span>$appId <\/span>= <\/span>'InsertAppID'<\/span>; <\/span>\/\/Facebook App ID
<\/span>$appSecret <\/span>= <\/span>'InsertAppSecret'<\/span>; <\/span>\/\/Facebook App Secret
<\/span>$redirectURL <\/span>= <\/span>'http:\/\/localhost\/post_to_facebook_from_website\/'<\/span>; <\/span>\/\/Callback URL
<\/span>$fbPermissions <\/span>= array(<\/span>'publish_actions'<\/span>); <\/span>\/\/Facebook permission
<\/span>$fb <\/span>= new <\/span>Facebook<\/span>(array(
<\/span>'app_id' <\/span>=> <\/span>$appId<\/span>,
<\/span>'app_secret' <\/span>=> <\/span>$appSecret<\/span>,
<\/span>'default_graph_version' <\/span>=> <\/span>'v2.6'<\/span>,
));
<\/span>\/\/ Get redirect login helper
<\/span>$helper <\/span>= <\/span>$fb<\/span>-><\/span>getRedirectLoginHelper<\/span>();
<\/span>\/\/ Try to get access token
<\/span>try {
if(isset(<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>])){
<\/span>$accessToken <\/span>= <\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>];
}else{
<\/span>$accessToken <\/span>= <\/span>$helper<\/span>-><\/span>getAccessToken<\/span>();
}
} catch(<\/span>FacebookResponseException $e<\/span>) {
echo <\/span>'Graph returned an error: ' <\/span>. <\/span>$e<\/span>-><\/span>getMessage<\/span>();
exit;
} catch(<\/span>FacebookSDKException $e<\/span>) {
echo <\/span>'Facebook SDK returned an error: ' <\/span>. <\/span>$e<\/span>-><\/span>getMessage<\/span>();
exit;
}
<\/span>?><\/span><\/pre>\nNote that: You\u2019ll find the App ID and App Secret on your Facebook Apps settings page.<\/p>\n
Submit Post to Facebook Wall (index.php)<\/h2>\n
Include the fbConfig.php<\/code> file to connect Facebook API and get the access token.<\/p>\nIf FB access token ($accessToken<\/code>) is available, the following will happen.<\/p>\n\n- Access token will be stored in the session that will be used for next time API calls.<\/li>\n
- Post message, name, link, description, and the picture will be submitted to Facebook wall.<\/li>\n
- Post submission status will be shown.<\/li>\n<\/ul>\n
If FB access token ($accessToken<\/code>) is not available, the Facebook Login URL will be generated and the user would be redirected to the FB login page.<\/p>\n<?php
<\/span>\/\/ Include FB configuration file
<\/span>require_once <\/span>'fbConfig.php'<\/span>;
if(isset(<\/span>$accessToken<\/span>)){
if(isset(<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>])){
<\/span>$fb<\/span>-><\/span>setDefaultAccessToken<\/span>(<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>]);
}else{
<\/span>\/\/ Put short-lived access token in session
<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>] = (string) <\/span>$accessToken<\/span>;
<\/span>\/\/ OAuth 2.0 client handler helps to manage access tokens
<\/span>$oAuth2Client <\/span>= <\/span>$fb<\/span>-><\/span>getOAuth2Client<\/span>();
<\/span>\/\/ Exchanges a short-lived access token for a long-lived one
<\/span>$longLivedAccessToken <\/span>= <\/span>$oAuth2Client<\/span>-><\/span>getLongLivedAccessToken<\/span>(<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>]);
<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>] = (string) <\/span>$longLivedAccessToken<\/span>;
<\/span>\/\/ Set default access token to be used in script
<\/span>$fb<\/span>-><\/span>setDefaultAccessToken<\/span>(<\/span>$_SESSION<\/span>[<\/span>'facebook_access_token'<\/span>]);
}
<\/span>\/\/FB post content
<\/span>$message <\/span>= <\/span>'Test message from CodexWorld.com website'<\/span>;
<\/span>$title <\/span>= <\/span>'Post From Website'<\/span>;
<\/span>$link <\/span>= <\/span>'http:\/\/www.codexworld.com\/'<\/span>;
<\/span>$description <\/span>= <\/span>'CodexWorld is a programming blog.'<\/span>;
<\/span>$picture <\/span>= <\/span>'http:\/\/www.codexworld.com\/wp-content\/uploads\/2015\/12\/www-codexworld-com-programming-blog.png'<\/span>;
<\/span>$attachment <\/span>= array(
<\/span>'message' <\/span>=> <\/span>$message<\/span>,
<\/span>'name' <\/span>=> <\/span>$title<\/span>,
<\/span>'link' <\/span>=> <\/span>$link<\/span>,
<\/span>'description' <\/span>=> <\/span>$description<\/span>,
<\/span>'picture'<\/span>=><\/span>$picture<\/span>,
);
try{
<\/span>\/\/ Post to Facebook
<\/span>$fb<\/span>-><\/span>post<\/span>(<\/span>'\/me\/feed'<\/span>, <\/span>$attachment<\/span>, <\/span>$accessToken<\/span>);
<\/span>\/\/ Display post submission status
<\/span>echo <\/span>'The post was published successfully to the Facebook timeline.'<\/span>;
}catch(<\/span>FacebookResponseException $e<\/span>
![\"post-to-facebook-wall-from-website-php-sdk-files-structure-codexworld\"](\"https:\/\/www.codexworld.com\/wp-content\/uploads\/2016\/03\/post-to-facebook-wall-from-website-php-sdk-files-structure-codexworld.png\")
<\/div>\n