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