| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /* | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |     Copyright 2006 Aaron D. Campbell (email : [email protected]) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |     This program is free software; you can redistribute it and/or modify | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |     it under the terms of the GNU General Public License as published by | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |     the Free Software Foundation; either version 2 of the License, or | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |     (at your option) any later version. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |     This program is distributed in the hope that it will be useful, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |     but WITHOUT ANY WARRANTY; without even the implied warranty of | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |     GNU General Public License for more details. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |     You should have received a copy of the GNU General Public License | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |     along with this program; if not, write to the Free Software | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |     Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  * Jetpack_Google_Analytics is the class that handles ALL of the plugin functionality. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  * It helps us avoid name collisions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  * https://codex.wordpress.org/Writing_a_Plugin#Avoiding_Function_Name_Collisions | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | if ( ! defined( 'ABSPATH' ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 	exit; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | require_once( plugin_basename( 'classes/wp-google-analytics-utils.php' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | require_once( plugin_basename( 'classes/wp-google-analytics-options.php' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | require_once( plugin_basename( 'classes/wp-google-analytics-legacy.php' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | require_once( plugin_basename( 'classes/wp-google-analytics-universal.php' ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | class Jetpack_Google_Analytics { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	 * @var Jetpack_Google_Analytics - Static property to hold our singleton instance | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 	static $instance = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 	 * @var Static property to hold concrete analytics impl that does the work (universal or legacy) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 	static $analytics = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 	 * This is our constructor, which is private to force the use of get_instance() | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 	 * @return void | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 52 |  |  | 	private function __construct() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 		// At this time, we only leverage universal analytics when enhanced ecommerce is selected and WooCommerce is active. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  | 		// Otherwise, don't bother emitting the tracking ID or fetching analytics.js | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 		if ( class_exists( 'WooCommerce' ) && Jetpack_Google_Analytics_Options::enhanced_ecommerce_tracking_is_enabled() ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 			$analytics = new Jetpack_Google_Analytics_Universal(); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 			$analytics = new Jetpack_Google_Analytics_Legacy(); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	 * Function to instantiate our class and make it a singleton | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	public static function get_instance() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 		if ( ! self::$instance ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 			self::$instance = new self; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 		return self::$instance; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 	 * Add amp-analytics tags. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 	 * @param array $analytics_entries An associative array of the analytics entries. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 	 * @return array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 	public static function amp_analytics_entries( $analytics_entries ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		if ( ! is_array( $analytics_entries ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 			$analytics_entries = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 		$amp_tracking_codes = static::get_amp_tracking_codes( $analytics_entries ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 		$jetpack_account    = Jetpack_Google_Analytics_Options::get_tracking_code(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 		// Bypass tracking codes already set on AMP plugin. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 		if ( in_array( $jetpack_account, $amp_tracking_codes, true ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 			return $analytics_entries; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 		$config_data = wp_json_encode( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 			array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  | 				'vars'     => array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 					'account' => Jetpack_Google_Analytics_Options::get_tracking_code(), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 				), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 				'triggers' => array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 					'trackPageview' => array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 						'on'      => 'visible', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 						'request' => 'pageview', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 					), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 				), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 			) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 		// Generate a hash string to uniquely identify this entry. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 		$entry_id = substr( md5( 'googleanalytics' . $config_data ), 0, 12 ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 		$analytics_entries[ $entry_id ] = array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 			'type'   => 'googleanalytics', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 			'config' => $config_data, | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 		return $analytics_entries; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 	 * Get AMP tracking codes. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 	 * @param array $analytics_entries The codes available for AMP. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 	 * @return array | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 125 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 126 |  |  | 	protected static function get_amp_tracking_codes( $analytics_entries ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 127 |  |  | 		$entries  = array_column( $analytics_entries, 'config' ); | 
            
                                                                        
                            
            
                                    
            
            
                | 128 |  |  | 		$accounts = array(); | 
            
                                                                        
                            
            
                                    
            
            
                | 129 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 130 |  |  | 		foreach ( $entries as $entry ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 131 |  |  | 			$entry = json_decode( $entry ); | 
            
                                                                        
                            
            
                                    
            
            
                | 132 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 133 |  |  | 			if ( ! empty( $entry->vars->account ) ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 134 |  |  | 				$accounts[] = $entry->vars->account; | 
            
                                                                        
                            
            
                                    
            
            
                | 135 |  |  | 			} | 
            
                                                                        
                            
            
                                    
            
            
                | 136 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 137 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 138 |  |  | 		return $accounts; | 
            
                                                                        
                            
            
                                    
            
            
                | 139 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | global $jetpack_google_analytics; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 143 |  |  | $jetpack_google_analytics = Jetpack_Google_Analytics::get_instance(); | 
            
                                                        
            
                                    
            
            
                | 144 |  |  |  | 
            
                        
Adding a
@returnannotation to a constructor is not recommended, since a constructor does not have a meaningful return value.Please refer to the PHP core documentation on constructors.