Version 4.3.0

applications/core/sources/Facebook/Pixel.php

@@ -0,0 +1,115 @@
+<?php
+/**
+ * @brief		Facebook Pixel Class
+ * @author		<a href='http://www.invisionpower.com'>Invision Power Services, Inc.</a>
+ * @copyright	(c) 2001 - 2016 Invision Power Services, Inc.
+ * @license		http://www.invisionpower.com/legal/standards/
+ * @package		IPS Community Suite
+ * @since		16 May 2017
+ */
+
+namespace IPS\core\Facebook;
+
+/* To prevent PHP errors (extending class does not exist) revealing path */
+if ( !defined( '\IPS\SUITE_UNIQUE_KEY' ) )
+{
+	header( ( isset( $_SERVER['SERVER_PROTOCOL'] ) ? $_SERVER['SERVER_PROTOCOL'] : 'HTTP/1.0' ) . ' 403 Forbidden' );
+	exit;
+}
+
+/**
+ * Facebook Pixel class
+ */
+class _Pixel extends \IPS\Patterns\Singleton
+{
+	/**
+	 * @brief	Singleton Instances
+	 */
+	protected static $instance = NULL;
+	
+	/**
+	 * @brief	Data Store
+	 */
+	protected $data = NULL;
+	
+	/**
+	 * @brief	Events
+	 */
+	protected static $events = NULL;
+	
+	/**
+	 * Output for JS inclusion
+	 *
+	 * @return string|null
+	 */
+	public function output()
+	{
+		if ( $this->data === NULL )
+		{
+			return "fbq('track', 'PageView');";
+		}
+		
+		$return = array();
+		
+		if ( ! isset( $this->data['PageView'] ) )
+		{
+			$this->data['PageView'] = true;
+		}
+		
+		foreach( $this->data as $name => $params )
+		{
+			$inlineParams = '';
+		
+			if ( is_array( $params ) and count( $params ) )
+			{
+				$inlineParams = json_encode( $params );
+			}
+			
+			if ( $inlineParams )
+			{
+				$return[] = "fbq('track', '{$name}', " . $inlineParams . " );";
+			}
+			else
+			{
+				$return[] = "fbq('track', '{$name}');";
+			}
+		}
+		
+		return count( $return ) ? implode( "\n", $return ) : null;
+	}
+	
+	/**
+	 * Output for noscript inclusion
+	 *
+	 * @return string|null
+	 */
+	public function noscript()
+	{
+		if ( $this->data === NULL )
+		{
+			return '<img alt="" height="1" width="1" style="display:none" src="https://www.facebook.com/tr?id=' . \IPS\Settings::i()->fb_pixel_id . '&ev=PageView&noscript=1"/>';
+		}
+		
+		$return = array();
+		
+		if ( ! isset( $this->data['PageView'] ) )
+		{
+			$this->data['PageView'] = true;
+		}
+		
+		foreach( $this->data as $name => $params )
+		{
+			$url = 'https://www.facebook.com/tr?id=' . \IPS\Settings::i()->fb_pixel_id . '&ev=' . $name;
+			
+			if ( is_array( $params ) and count( $params ) )
+			{
+				$url .= '&' . http_build_query( array( 'cd' => $params ) );
+			}
+			
+			$return[] = '<img alt="" height="1" width="1" style="display:none" src="' . $url . '"/>';
+			
+		}
+			
+		return count( $return ) ? implode( "\n", $return ) : null;
+	}
+}