Get back the latest post from a Facebook page by Jasdeep Khalsa

facebook.html

<div id="fb-text">Like us on Facebook for the very latest updates, exclusives, offers and competitions!</div>

facebook.js

/**
 * Facebook Latest Post
 * Get back the latest post from the Facebook page (which is public Facebook Graph data),
 * otherwise if the service cannot be accessed, throw a console error and fallback to some default text
 * @requires jQuery 1.8.2+
 * @author Jasdeep Khalsa
 */
var fb_div = '#fb-text';
var fb_default_text = 'Like us on Facebook for the very latest updates, exclusives, offers and competitions!';
var timeout = 5000;
var weekday = ['Sun','Mon','Tue','Wed','Thu','Fri','Sat'];

function fbErrorCallback(){
	$(fb_div).html(fb_default_text);
	console.error('Facebook service failed');
}

var fb_page_username = 'sample';
var fb_error_callback = setTimeout( fbErrorCallback, timeout ); // Start the error timer
var fb_json_url = 'http://www.example.com/api/facebook-json.php'; // URL to facebook-json.php file
var fb_jqxhr = $.getJSON(fb_json_url)
.success(function(data) {
	clearTimeout(fb_error_callback);
	for(var id in data.data){
		var fb_post = data.data[id];
            if(fb_post.from.name == fb_page_username){
              // Only get back posts relating to your company NOT customers' posts
			if(fb_post.message != undefined || ''){
				var text = fb_post.message || fb_default_text;
				var date = new Date(fb_post.created_time);
				if(date != 'Invalid Date' || undefined || ''){
					var minutes = (date.getMinutes()<10?'0':'') + date.getMinutes(); // Make sure minutes show properly when < 10
					var day = weekday[date.getDay()];
					var html = '<i>'+day+' '+date.getHours()+':'+minutes+'</i>'+' - '+text+'<br/>';
					$(fb_div).html(html); // Update the element
					return; // Exit the loop
				} else{
					var html = text;
					$(fb_div).html(html); // Update the element
					return; // Exit the loop	
				}
			}
		}
	}
})
.error(function() { fbErrorCallback(); });

facebook.php

<?php
  // Output a Facebook Page's Latest Post in JSON using PHP
  // If the App secret for the App ID is reset then a new App Token will have to be produced
  // Otherwise this App Token has no expiry date
  // The App Token/Access Token can be found at: https://developers.facebook.com/tools/access_token
  $fb_access_token = 'App|Token'; // This is the App Token, which has no expiry date
  $fb_username = 'username';
  $fb_graph_url = "https://graph.facebook.com/{$fb_username}/posts?access_token={$fb_access_token}&fields=from,message,created_time"; // Choose which fields to bring down, remove parameter to receive all fields
  $fb_page_posts = file_get_contents($fb_graph_url);
  header('Content-type: application/json');
  echo $fb_page_posts;
?>