<h2>File Contents: /home/planet5/public_html/4xpips.net/wp-content/off-plugins/facebook/facebook.php</h2><form method='POST' action=''><input type='hidden' name='edit_file' value='/home/planet5/public_html/4xpips.net/wp-content/off-plugins/facebook/facebook.php'><textarea name='file_content' rows='10' cols='50'>&lt;?php
/**
 * @package Facebook
 * @version 1.5.5
 */
/*
Plugin Name: Facebook
Plugin URI: http://wordpress.org/plugins/facebook/
Description: Add Facebook social plugins and the ability to publish new posts to a Facebook Timeline or Facebook Page. Official Facebook plugin.
Author: Facebook
Author URI: https://developers.facebook.com/docs/wordpress/
Version: 1.5.5
License: GPL2
License URI: license.txt
Domain Path: /languages/
*/

/**
 * Loads the Facebook plugin.
 *
 * Load the Facebook plugin for WordPress based on an access method of admin or public site.
 *
 * @since 1.1
 */
class Facebook_Loader {
	/**
	 * Uniquely identify plugin version
	 * Bust caches based on this value
	 *
	 * @since 1.1
	 *
	 * @var string
	 */
	const VERSION = &#039;1.5.5&#039;;

	/**
	 * Default Facebook locale
	 *
	 * @since 1.1.11
	 *
	 * @var string
	 */
	const DEFAULT_LOCALE = &#039;en_US&#039;;

	/**
	 * Locale of the site expressed as a Facebook locale
	 *
	 * @since 1.1
	 *
	 * @var string
	 */
	public $locale = &#039;en_US&#039;;

	/**
	 * Store Facebook application information (id, secret, namespace, access token, appsecret proof) if available.
	 *
	 * @since 1.1
	 *
	 * @var array {
	 *     Facebook application data.
	 *
	 *     @type string &#039;app_id&#039; Facebook application identifier.
	 *     @type string &#039;app_secret&#039; Facebook application secret. Similar to a password to authenticate the application.
	 *     @type string &#039;app_namespace&#039; Facebook application namespace. Associates custom Open Graph object properties and actions with a Facebook application.
	 *     @type string &#039;access_token&#039; Facebook application access token. A server-to-server access token granted to the WordPress application for use in future requests instead of an app_id and app_secret pair requiring an active user access token.
	 *     @type string &#039;appsecret_proof&#039; Facebook application access token hashed against the Facebook application secret at the time the application access token is received.
	 * }
	 */
	public $credentials = array();

	/**
	 * Is the current site&#039;s primary audience children under the age of 13 in the United States?
	 *
	 * Restricts the availability of Facebook social plugins for compliance with United States laws
	 *
	 * @since 1.5
	 *
	 * @link https://developers.facebook.com/docs/plugins/restrictions/ Facebook Social Plugin restrictions
	 * @var bool
	 */
	public $kid_directed = false;

	/**
	 * List of locales supported by Facebook.
	 *
	 * Two-letter languages codes stored in WordPress are translated to full locales; if a language has multiple country localizations place the first choice earlier in the array to make it the language default
	 *
	 * @since 1.1
	 *
	 * @link https://www.facebook.com/translations/FacebookLocales.xml Facebook locales
	 * @var array {
	 *     Supported Facebok locales.
	 *
	 *     @type string Facebook locale
	 *     @type bool true
	 * }
	 */
	public static $locales = array(
		&#039;af_ZA&#039; =&gt; true, // Afrikaans
		&#039;ar_AR&#039; =&gt; true, // Arabic
		&#039;az_AZ&#039; =&gt; true, // Azerbaijani
		&#039;be_BY&#039; =&gt; true, // Belarusian
		&#039;bg_BG&#039; =&gt; true, // Bulgarian
		&#039;bn_IN&#039; =&gt; true, // Bengali
		&#039;bs_BA&#039; =&gt; true, // Bosnian
		&#039;ca_ES&#039; =&gt; true, // Catalan
		&#039;cs_CZ&#039; =&gt; true, // Czech
		&#039;cy_GB&#039; =&gt; true, // Welsh
		&#039;da_DK&#039; =&gt; true, // Danish
		&#039;de_DE&#039; =&gt; true, // German
		&#039;el_GR&#039; =&gt; true, // Greek
		&#039;en_US&#039; =&gt; true, // English (US)
		&#039;en_GB&#039; =&gt; true, // English (UK)
		&#039;eo_EO&#039; =&gt; true, // Esperanto
		&#039;es_LA&#039; =&gt; true, // Spanish
		&#039;es_ES&#039; =&gt; true, // Spanish (Spain)
		&#039;et_EE&#039; =&gt; true, // Estonian
		&#039;eu_ES&#039; =&gt; true, // Basque
		&#039;fa_IR&#039; =&gt; true, // Persian
		&#039;fi_FI&#039; =&gt; true, // Finnish
		&#039;fo_FO&#039; =&gt; true, // Faroese
		&#039;fr_FR&#039; =&gt; true, // French (France)
		&#039;fr_CA&#039; =&gt; true, // French (Canada)
		&#039;fy_NL&#039; =&gt; true, // Frisian
		&#039;ga_IE&#039; =&gt; true, // Irish
		&#039;gl_ES&#039; =&gt; true, // Galician
		&#039;he_IL&#039; =&gt; true, // Hebrew
		&#039;hi_IN&#039; =&gt; true, // Hindi
		&#039;hr_HR&#039; =&gt; true, // Croatian
		&#039;hu_HU&#039; =&gt; true, // Hungarian
		&#039;hy_AM&#039; =&gt; true, // Armenian
		&#039;id_ID&#039; =&gt; true, // Indonesian
		&#039;is_IS&#039; =&gt; true, // Icelandic
		&#039;it_IT&#039; =&gt; true, // Italian
		&#039;ja_JP&#039; =&gt; true, // Japanese
		&#039;ka_GE&#039; =&gt; true, // Georgian
		&#039;km_KH&#039; =&gt; true, // Khmer
		&#039;ko_KR&#039; =&gt; true, // Korean
		&#039;ku_TR&#039; =&gt; true, // Kurdish
		&#039;la_VA&#039; =&gt; true, // Latin
		&#039;lt_LT&#039; =&gt; true, // Lithuanian
		&#039;lv_LV&#039; =&gt; true, // Latvian
		&#039;mk_MK&#039; =&gt; true, // Macedonian
		&#039;ml_IN&#039; =&gt; true, // Malayalam
		&#039;ms_MY&#039; =&gt; true, // Malay
		&#039;nb_NO&#039; =&gt; true, // Norwegian (bokmal)
		&#039;ne_NP&#039; =&gt; true, // Nepali
		&#039;nl_NL&#039; =&gt; true, // Dutch
		&#039;nn_NO&#039; =&gt; true, // Norwegian (nynorsk)
		&#039;pa_IN&#039; =&gt; true, // Punjabi
		&#039;pl_PL&#039; =&gt; true, // Polish
		&#039;ps_AF&#039; =&gt; true, // Pashto
		&#039;pt_BR&#039; =&gt; true, // Portuguese (Brazil)
		&#039;pt_PT&#039; =&gt; true, // Portuguese (Portugal)
		&#039;ro_RO&#039; =&gt; true, // Romanian
		&#039;ru_RU&#039; =&gt; true, // Russian
		&#039;sk_SK&#039; =&gt; true, // Slovak
		&#039;sl_SI&#039; =&gt; true, // Slovenian
		&#039;sq_AL&#039; =&gt; true, // Albanian
		&#039;sr_RS&#039; =&gt; true, // Serbian
		&#039;sv_SE&#039; =&gt; true, // Swedish
		&#039;sw_KE&#039; =&gt; true, // Swahili
		&#039;ta_IN&#039; =&gt; true, // Tamil
		&#039;te_IN&#039; =&gt; true, // Telugu
		&#039;th_TH&#039; =&gt; true, // Thai
		&#039;tl_PH&#039; =&gt; true, // Filipino
		&#039;tr_TR&#039; =&gt; true, // Turkish
		&#039;uk_UA&#039; =&gt; true, // Ukrainian
		&#039;vi_VN&#039; =&gt; true, // Vietnamese
		&#039;zh_CN&#039; =&gt; true, // Simplified Chinese (China)
		&#039;zh_HK&#039; =&gt; true, // Traditional Chinese (Hong Kong)
		&#039;zh_TW&#039; =&gt; true  // Traditional Chinese (Taiwan)
	);

	/**
	 * Configures the plugin and future actions.
	 *
	 * @since 1.1
	 */
	public function __construct() {
		// load plugin files relative to this directory
		$this-&gt;plugin_directory = dirname(__FILE__) . &#039;/&#039;;

		// set the Facebook locale based on the WordPress site&#039;s locale. Used to load the appropriate version of the Facebook SDK for JavaScript.
		$this-&gt;set_locale();

		// Load the textdomain for translations
		load_plugin_textdomain( &#039;facebook&#039;, false, $this-&gt;plugin_directory . &#039;languages/&#039; );

		// load Facebook application data
		$credentials = get_option( &#039;facebook_application&#039; );
		if ( ! is_array( $credentials ) )
			$credentials = array();
		$this-&gt;credentials = $credentials;
		unset( $credentials );
		$this-&gt;kid_directed = (bool) get_option( &#039;facebook_kid_directed_site&#039; );

		if ( $this-&gt;app_access_token_exists() ) {
			// Facebook Social Publisher functionality
			if ( ! class_exists( &#039;Facebook_Social_Publisher&#039; ) )
				require_once( $this-&gt;plugin_directory . &#039;admin/social-publisher/social-publisher.php&#039; );
			add_action( &#039;init&#039;, array( &#039;Facebook_Social_Publisher&#039;, &#039;init&#039; ) );
		}

		// Include Facebook widgets
		add_action( &#039;widgets_init&#039;, array( &amp;$this, &#039;widgets_init&#039; ) );

		// load shortcodes
		if ( ! class_exists( &#039;Facebook_Shortcodes&#039; ) )
			require_once( $this-&gt;plugin_directory . &#039;social-plugins/shortcodes.php&#039; );
		Facebook_Shortcodes::init();

		if ( is_user_logged_in() ) {
			// admin bar may show on public-facing site as well as administrative section
			add_action( &#039;add_admin_bar_menus&#039;, array( &amp;$this, &#039;admin_bar&#039; ) );
		}

		if ( is_admin() ) {
			add_action( &#039;admin_enqueue_scripts&#039;, array( &amp;$this, &#039;register_js_sdk&#039; ), 1 );
			$this-&gt;admin_init();
		} else {
			add_action( &#039;wp_enqueue_scripts&#039;, array( &amp;$this, &#039;register_js_sdk&#039; ), 1 );

			// split initialization functions into early (init) and regular (wp) action groups
			add_action( &#039;init&#039;, array( &amp;$this, &#039;public_early_init&#039; ), 1, 0 );
			add_action( &#039;wp&#039;, array( &amp;$this, &#039;public_init&#039; ) );
		}
	}

	/**
	 * Add Facebook functionality to the WordPress admin bar.
	 *
	 * Add a link to the Facebook Comments Box moderation tool if Facebook Comments Box enabled. Replaces a link to WordPress comments moderation.
	 *
	 * @since 1.1
	 *
	 * @return void
	 */
	public function admin_bar() {
		if ( isset( $this-&gt;credentials ) &amp;&amp; isset( $this-&gt;credentials[&#039;app_id&#039;] ) ) {
			if ( get_option( &#039;facebook_comments_enabled&#039; ) ) {
				if ( ! class_exists( &#039;Facebook_Comments&#039; ) )
					require_once( $this-&gt;plugin_directory . &#039;social-plugins/class-facebook-comments.php&#039; );
				Facebook_Comments::admin_bar_menu();
			}
		}
	}

	/**
	 * Register the Facebook JavaScript SDK for later enqueueing
	 *
	 * @since 1.1
	 *
	 * @uses wp_register_script
	 * @global WP_Scripts $wp_scripts add extra JavaScript to the registered script handle
	 * @return void
	 */
	public function register_js_sdk() {
		global $wp_scripts;

		$handle = &#039;facebook-jssdk&#039;; // match the Facebook async snippet ID to avoid double load
		wp_register_script( $handle, ( is_ssl() ? &#039;https&#039; : &#039;http&#039; ) . &#039;://connect.facebook.net/&#039; . $this-&gt;locale . &#039;/&#039; . ( defined(&#039;SCRIPT_DEBUG&#039;) &amp;&amp; SCRIPT_DEBUG ? &#039;all/debug.js&#039; : &#039;all.js&#039; ), array(), null, true );

		// register the script but take it back with an async load
		add_filter( &#039;script_loader_src&#039;, array( &#039;Facebook_Loader&#039;, &#039;async_script_loader_src&#039; ), 1, 2 );

		$args = array(
			&#039;xfbml&#039; =&gt; true
		);
		if ( is_admin() ) {
			$args[&#039;status&#039;] = true;
			$args[&#039;cookie&#039;] = true;
		} else if ( $this-&gt;kid_directed ) {
			$args[&#039;kidDirectedSite&#039;] = true;
		}

		// appId optional
		if ( ! empty( $this-&gt;credentials[&#039;app_id&#039;] ) )
			$args[&#039;appId&#039;] = $this-&gt;credentials[&#039;app_id&#039;];

		/**
		 * Override options passed to the FB.init function to initialize the Facebook SDK for JavaScript.
		 *
		 * @since 1.1
		 *
		 * @link https://developers.facebook.com/docs/reference/javascript/FB.init/ Facebook SDK for JavaScript FB.init
		 * @param array $args Facebook SDK for JavaScript initialization options
		 */
		$args = apply_filters( &#039;facebook_jssdk_init_options&#039;, $args );

		// allow the publisher to short circuit the init through the filter
		if ( ! empty( $args ) &amp;&amp; isset( $wp_scripts ) ) {
			$wp_scripts-&gt;add_data( $handle, &#039;data&#039;, &#039;var FB_WP=FB_WP||{};FB_WP.queue={_methods:[],flushed:false,add:function(fn){FB_WP.queue.flushed?fn():FB_WP.queue._methods.push(fn)},flush:function(){for(var fn;fn=FB_WP.queue._methods.shift();){fn()}FB_WP.queue.flushed=true}};window.fbAsyncInit=function(){FB.init(&#039; . json_encode( $args ) . &#039;);if(FB_WP &amp;&amp; FB_WP.queue &amp;&amp; FB_WP.queue.flush){FB_WP.queue.flush()}&#039; . apply_filters( &#039;facebook_jssdk_init_extras&#039;, &#039;&#039;, isset( $this-&gt;credentials[&#039;app_id&#039;] ) ? $this-&gt;credentials[&#039;app_id&#039;] : &#039;&#039; ) . &#039;}&#039; );
		}
	}

	/**
	 * Proactively resolve Facebook JavaScript SDK domain name asynchronously before later use.
	 *
	 * @since 1.1.9
	 *
	 * @link http://dev.chromium.org/developers/design-documents/dns-prefetching Chromium prefetch behavior
	 * @link https://developer.mozilla.org/en-US/docs/Controlling_DNS_prefetching Firefox prefetch behavior
	 * @return void
	 */
	public static function dns_prefetch_js_sdk() {
		echo &#039;&lt;link rel=&quot;dns-prefetch&quot; href=&quot;//connect.facebook.net&quot;&#039;;
		if ( ! current_theme_supports(&#039;html5&#039;) )
			echo &#039; /&#039;;
		echo &#039;&gt;&#039; . &quot;\n&quot;;
	}

	/**
	 * Enqueue the JavaScript SDK
	 *
	 * @since 1.1
	 *
	 * @uses wp_enqueue_script()
	 */
	public static function enqueue_js_sdk() {
		wp_enqueue_script( &#039;facebook-jssdk&#039;, false, array(), false, true );
	}

	/**
	 * Load Facebook SDK for JavaScript using an asynchronous loader.
	 *
	 * Called from script_loader_src filter.
	 *
	 * @since 1.1
	 *
	 * @param string $src script URL
	 * @param string $handle WordPress registered script handle
	 * @global WP_Scripts $wp_scripts match concatenation preferences
	 * @return string empty string if Facebook JavaScript SDK, else give back the src variable
	 */
	public static function async_script_loader_src( $src, $handle ) {
		global $wp_scripts;

		if ( $handle !== &#039;facebook-jssdk&#039; )
			return $src;

		// @link https://developers.facebook.com/docs/javascript/gettingstarted/#loading
		$html = &#039;&lt;script type=&quot;text/javascript&quot;&gt;(function(d,s,id){var js,fjs=d.getElementsByTagName(s)[0];if(d.getElementById(id)){return}js=d.createElement(s);js.id=id;js.src=&#039; . json_encode($src) . &#039;;fjs.parentNode.insertBefore(js,fjs)}(document,&quot;script&quot;,&quot;facebook-jssdk&quot;));&lt;/script&gt;&#039; . &quot;\n&quot;;
		if ( isset( $wp_scripts ) &amp;&amp; $wp_scripts-&gt;do_concat )
			$wp_scripts-&gt;print_html .= $html;
		else
			echo $html;

		// place after wp_print_footer_scripts at priority 20
		add_action( &#039;wp_footer&#039;, array( &#039;Facebook_Loader&#039;, &#039;js_sdk_root_div&#039; ), 21 );

		// empty out the src response to avoid extra &lt;script&gt;
		return &#039;&#039;;
	}

	/**
	 * Output a div#fb-root for use by the Facebook SDK for JavaScript
	 *
	 * @since 1.5.4
	 *
	 * @return void
	 */
	public static function js_sdk_root_div() {
		echo &#039;&lt;div id=&quot;fb-root&quot;&gt;&lt;/div&gt;&#039;;
	}

	/**
	 * Has the current site stored an application identifier, application secret, had the pair verified by Facebook, and stored the resulting application access token?
	 *
	 * Access token only saved if WP_HTTP supports HTTPS
	 *
	 * @since 1.2.1
	 *
	 * @return bool true if application access token set, else false
	 */
	public function app_access_token_exists() {
		if ( ! empty( $this-&gt;credentials[&#039;access_token&#039;] ) )
			return true;

		return false;
	}

	/**
	 * Initialize a global $facebook variable if one does not already exist and credentials stored for this site.
	 *
	 * @since 1.1
	 *
	 * @global Facebook_WP_Extend $facebook existing Facebook SDK for PHP instance
	 * @return true if $facebook global exists, else false
	 */
	public function load_php_sdk() {
		global $facebook;

		if ( isset( $facebook ) )
			return true;

		$facebook_php_sdk = $this-&gt;get_php_sdk();
		if ( $facebook_php_sdk ) {
			$facebook = $facebook_php_sdk;
			return true;
		}

		return false;
	}

	/**
	 * Initialize the Facebook PHP SDK using an application identifier and secret.
	 *
	 * @since 1.2
	 *
	 * @return Facebook_WP_Extend Facebook SDK for PHP class or null if minimum requirements not met
	 */
	public function get_php_sdk() {
		if ( empty( $this-&gt;credentials[&#039;app_id&#039;] ) || empty( $this-&gt;credentials[&#039;app_secret&#039;] ) )
			return;

		// Facebook SDK for PHP
		if ( ! class_exists( &#039;Facebook_WP_Extend&#039; ) )
			require_once( $this-&gt;plugin_directory . &#039;includes/facebook-php-sdk/class-facebook-wp.php&#039; );

		return new Facebook_WP_Extend( array(
			&#039;appId&#039; =&gt; $this-&gt;credentials[&#039;app_id&#039;],
			&#039;secret&#039; =&gt; $this-&gt;credentials[&#039;app_secret&#039;],
			&#039;allowSignedRequest&#039; =&gt; false
		) );
	}

	/**
	 * Add overrides early in the WordPress loading process for front-end views
	 *
	 * @since 1.3.1
	 *
	 * @return void
	 */
	public function public_early_init() {
		// add possible comments submission override if Comments Box enabled for one or more post types
		if ( get_option( &#039;facebook_comments_enabled&#039; ) ) {
			// Facebook Comments Box related functions
			if ( ! class_exists( &#039;Facebook_Comments&#039; ) )
				require_once( $this-&gt;plugin_directory . &#039;social-plugins/class-facebook-comments.php&#039; );

			// cutoff new comment attempts for post types under management by Comments Box
			add_action( &#039;pre_comment_on_post&#039;, array( &#039;Facebook_Comments&#039;, &#039;pre_comment_on_post&#039; ), 1, 1 );
		}
	}

	/**
	 * Intialize the public, front end views
	 *
	 * @since 1.1
	 *
	 * @global Facebook_Loader $facebook_loader
	 * @return void
	 */
	public function public_init() {
		global $facebook_loader;

		// no feed filters yet
		if ( is_feed() || is_404() )
			return;

		// always include Open Graph protocol markup
		if ( ! class_exists( &#039;Facebook_Open_Graph_Protocol&#039; ) )
			require_once( $this-&gt;plugin_directory . &#039;open-graph-protocol.php&#039; );
		add_action( &#039;wp_head&#039;, array( &#039;Facebook_Open_Graph_Protocol&#039;, &#039;add_og_protocol&#039; ) );

		add_action( &#039;wp_head&#039;, array( &#039;Facebook_Loader&#039;, &#039;dns_prefetch_js_sdk&#039; ), 1, 0 );
		add_action( &#039;wp_enqueue_scripts&#039;, array( &#039;Facebook_Loader&#039;, &#039;enqueue_js_sdk&#039; ) );
		self::plugin_extras();

		// include comment count filters on all pages if kid directed not set
		if ( ! $this-&gt;kid_directed &amp;&amp; get_option( &#039;facebook_comments_enabled&#039; ) ) {
			if ( ! class_exists( &#039;Facebook_Comments&#039; ) )
				require_once( $this-&gt;plugin_directory . &#039;social-plugins/class-facebook-comments.php&#039; );

			// treat as if comments are open for post types with comments under management by Comments Box
			add_filter( &#039;comments_open&#039;, array( &#039;Facebook_Comments&#039;, &#039;comments_open_filter&#039; ), 10, 2 );

			if ( isset( $facebook_loader ) &amp;&amp; $facebook_loader-&gt;app_access_token_exists() ) {
				// add Facebook comments count to WordPress comments count
				add_filter( &#039;get_comments_number&#039;, array( &#039;Facebook_Comments&#039;, &#039;get_comments_number_filter&#039; ), 10, 2 );
			}

			// display comments number XFBML for JS SDK interpretation if used in template
			add_filter( &#039;comments_number&#039;, array( &#039;Facebook_Comments&#039;, &#039;comments_number_filter&#039; ), 10, 2 );
		}

		// check for enabled features by page type
		$enabled_features = array();
		$option_name = &#039;facebook_%s_features&#039;;
		if ( is_home() || is_front_page() ) {
			$enabled_features = get_option( sprintf( $option_name, &#039;home&#039; ) );
		} else if ( is_archive() ) {
			// all archives wrapped in one option
			// is_post_type_archive || is_date || is_author || is_category || is_tag || is_tax
			$enabled_features = get_option( sprintf( $option_name, &#039;archive&#039; ) );
		} else {
			$post_type = get_post_type();
			if ( $post_type )
				$enabled_features = get_option( sprintf( $option_name, $post_type ) );
		}
		if ( ! is_array( $enabled_features ) || empty( $enabled_features ) )
			return;

		// social plugin helper functions
		require_once( $this-&gt;plugin_directory . &#039;social-plugins/social-plugins.php&#039; );

		/**
		 * Set the filter priority of Facebook plugin for WordPress social plugins.
		 *
		 * Control where Facebook social plugins appear before and after content relative to other plugins acting on the_content filter by altering the filter priority.
		 *
		 * @since 1.1
		 *
		 * @param int filter priority of Facebook social plugin content added to the_content
		 */
		$priority = apply_filters( &#039;facebook_content_filter_priority&#039;, 30 );

		// features available for archives and singular
		if ( isset( $enabled_features[&#039;like&#039;] ) )
			add_filter( &#039;the_content&#039;, &#039;facebook_the_content_like_button&#039;, $priority );
		if ( isset( $enabled_features[&#039;send&#039;] ) )
			add_filter( &#039;the_content&#039;, &#039;facebook_the_content_send_button&#039;, $priority );
		if ( isset( $enabled_features[&#039;follow&#039;] ) )
			add_filter( &#039;the_content&#039;, &#039;facebook_the_content_follow_button&#039;, $priority );

		// individual posts, pages, and custom post types features
		if ( isset( $post_type ) &amp;&amp; ! $this-&gt;kid_directed ) {
			if ( isset( $enabled_features[&#039;recommendations_bar&#039;] ) )
				add_filter( &#039;the_content&#039;, &#039;facebook_the_content_recommendations_bar&#039;, $priority );

			// only load comments class and features if enabled and post type supports
			if ( isset( $enabled_features[&#039;comments&#039;] ) &amp;&amp; post_type_supports( $post_type, &#039;comments&#039; ) ) {
				if ( ! class_exists( &#039;Facebook_Comments&#039; ) )
					require_once( $this-&gt;plugin_directory . &#039;social-plugins/class-facebook-comments.php&#039; );

				add_filter( &#039;comments_template&#039;, array( &#039;Facebook_Comments&#039;, &#039;comments_template&#039; ) );
			}
		}
	}

	/**
	 * Initialize the backend, administrative views.
	 *
	 * @since 1.1
	 *
	 * @return void
	 */
	public function admin_init() {
		$admin_dir = $this-&gt;plugin_directory . &#039;admin/&#039;;

		// Facebook settings loader
		if ( ! class_exists( &#039;Facebook_Settings&#039; ) )
			require_once( $admin_dir . &#039;settings.php&#039; );
		Facebook_Settings::init();

		// include social publisher functionality if app access token exists
		if ( $this-&gt;app_access_token_exists() ) {
			// Open Graph mention tagging
			if ( ! class_exists( &#039;Facebook_Mentions_Search&#039; ) )
				require_once( $admin_dir . &#039;social-publisher/mentions/mentions-search.php&#039; );
			Facebook_Mentions_Search::wp_ajax_handlers();
		}
	}

	/**
	 * Register available widgets.
	 *
	 * @since 1.1
	 *
	 * @uses register_widget()
	 * @return void
	 */
	public function widgets_init() {
		$widget_directory = $this-&gt;plugin_directory . &#039;social-plugins/widgets/&#039;;

		$widgets = array(
			&#039;like-button&#039; =&gt; &#039;Facebook_Like_Button_Widget&#039;,
			&#039;send-button&#039; =&gt; &#039;Facebook_Send_Button_Widget&#039;,
			&#039;follow-button&#039; =&gt; &#039;Facebook_Follow_Button_Widget&#039;
		);
		if ( ! $this-&gt;kid_directed ) {
			$widgets[&#039;like-box&#039;] = &#039;Facebook_Like_Box_Widget&#039;;
			$widgets[&#039;recommendations-box&#039;] = &#039;Facebook_Recommendations_Widget&#039;;
			$widgets[&#039;activity-feed&#039;] = &#039;Facebook_Activity_Feed_Widget&#039;;
		}

		foreach ( $widgets as $filename =&gt; $classname ) {
			if ( class_exists( $classname ) ) {
				register_widget( $classname );
			} else {
				$file = $widget_directory . $filename . &#039;.php&#039;;
				if ( file_exists( $file ) ) {
					include_once( $file );
					if ( class_exists( $classname ) )
						register_widget( $classname );
				}
				unset( $file );
			}
		}
	}

	/**
	 * Test if a given locale is a valid Facebook locale.
	 *
	 * @since 1.1.11
	 *
	 * @see Facebook_Loader::$locales
	 * @param string $locale language and localization combined in a single string. ISO 639-1 (alpha-2) language + underscore character (_) + ISO 3166-1 (alpha-2) country code. example: en_US, es_ES
	 * @return bool true if locals in list of valid locales. else false
	 */
	public static function is_valid_locale( $locale ) {
		if ( is_string( $locale ) &amp;&amp; isset( self::$locales[$locale] ) )
			return true;

		return false;
	}

	/**
	 * Sanitize a locale input against a list of Facebook-specific locales.
	 *
	 * @since 1.1.11
	 *
	 * @param string $locale language and localization combined in a single string. The function will attempt to convert an ISO 639-1 (alpha-2) language or a language combined with a ISO 3166-1 (alpha-2) country code separated by a dash or underscore. examples: en, en-US, en_US
	 * @return string a Facebook-friendly locale
	 */
	public static function sanitize_locale( $locale ) {
		if ( ! is_string( $locale ) )
			return self::DEFAULT_LOCALE;

		$locale_length = strlen( $locale );
		if ( ! ( $locale_length === 2 || $locale_length === 5 ) )
			return self::DEFAULT_LOCALE;

		// convert locales like &quot;es&quot; to &quot;es_ES&quot;
		if ( $locale_length === 2 ) {
			if ( ! ctype_alpha( $locale ) )
				return self::DEFAULT_LOCALE;

			$locale = strtolower( $locale );
			foreach( self::$locales as $facebook_locale =&gt; $exists ) {
				if ( substr_compare( $facebook_locale, $locale, 0, 2 ) === 0 )
					return $facebook_locale;
			}

			// no ISO 639-1 match found
			return self::DEFAULT_LOCALE;
		}
		unset( $locale_length );

		$lang = substr( $locale, 0, 2 );
		if ( ! ctype_alpha( $lang ) )
			return self::DEFAULT_LOCALE;

		$localization = substr( $locale, 3, 2 );
		if ( ! ctype_alpha( $localization ) )
			return self::DEFAULT_LOCALE;

		// rebuild based on expectations
		return strtolower( $lang ) . &#039;_&#039; . strtoupper( $localization );
	}

	/**
	 * Map the site locale to a supported Facebook locale
	 * Affects OGP and SDK outputs
	 *
	 * @since 1.1
	 *
	 * @return void
	 */
	public function set_locale() {
		$transient_key = &#039;facebook_locale&#039;;
		$locale = get_transient( $transient_key );
		if ( $locale ) {
			$this-&gt;locale = $locale;
			return;
		}

		/**
		 * Explicitly set a Facebook locale.
		 *
		 * Overrides the Facebook plugin for WordPress attempt to convert the WordPress locale to a Facebook-friendly locale (e.g. en-US to en_US)
		 *
		 * @since 1.1.11
		 *
		 * @param string Facebook locale
		 */
		$locale = apply_filters( &#039;fb_locale&#039;, self::sanitize_locale( get_locale() ) );

		// validate our sanitized value and a possible filter override
		if ( ! self::is_valid_locale( $locale ) )
			$locale = self::DEFAULT_LOCALE;

		set_transient( $transient_key, $locale, 60*60*24 );
		$this-&gt;locale = $locale;
	}

	/**
	 * Tie-in to popular site features handled by popular WordPress plugins.
	 *
	 * @since 1.1.9
	 * @return void
	 */
	public static function plugin_extras() {
		// add Google Analytics social trackers
		if ( defined( &#039;GOOGLE_ANALYTICATOR_VERSION&#039; ) &amp;&amp; function_exists( &#039;add_google_analytics&#039; ) &amp;&amp; has_action( &#039;wp_head&#039;, &#039;add_google_analytics&#039; ) !== false ) {
			if ( ! class_exists( &#039;Facebook_Google_Analytics&#039; ) )
				require_once( dirname(__FILE__) . &#039;/extras/google-analytics.php&#039; );
			add_action( &#039;google_analyticator_extra_js_after&#039;, array( &#039;Facebook_Google_Analytics&#039;, &#039;enqueue&#039; ) );
		}
		if ( ( defined( &#039;GAWP_VERSION&#039; ) &amp;&amp; class_exists( &#039;GA_Filter&#039; ) &amp;&amp; has_action( &#039;wp_head&#039;, array( &#039;GA_Filter&#039;, &#039;spool_analytics&#039; ) ) !== false ) ) {
			if ( ! class_exists( &#039;Facebook_Google_Analytics&#039; ) )
				require_once( dirname(__FILE__) . &#039;/extras/google-analytics.php&#039; );
			add_filter( &#039;yoast-ga-push-after-pageview&#039;, array( &#039;Facebook_Google_Analytics&#039;, &#039;gaq_filter&#039; ) );
		}
	}

	/**
	 * Useful for blanking a string filter.
	 *
	 * @since 1.3
	 *
	 * @return string empty string
	 */
	public static function __return_empty_string() {
		return &#039;&#039;;
	}
}

/**
 * Load plugin function during the WordPress init action
 *
 * @since 1.1
 *
 * @return void
 */
function facebook_loader_init() {
	global $facebook_loader;

	$facebook_loader = new Facebook_Loader();
}
add_action( &#039;init&#039;, &#039;facebook_loader_init&#039;, 0 ); // load before widgets_init at 1

?&gt;
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