| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Jetpack MC Stats package. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * @package  automattic/jetpack-mc-stats | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  | namespace Automattic\Jetpack; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * Class MC Stats, used to record stats using https://pixel.wp.com/g.gif | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  | class A8c_Mc_Stats { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  | 	 * Holds the stats to be processed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  | 	 * @var array | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  | 	private $stats = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  | 	 * Indicates whether to use the transparent pixel (b.gif) instead of the regular smiley (g.gif) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  | 	 * @var boolean | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 	public $use_transparent_pixel = true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 	 * Class Constructor | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 	 * @param boolean $use_transparent_pixel Use the transparent pixel instead of the smiley. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 	public function __construct( $use_transparent_pixel = true ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 		$this->use_transparent_pixel = $use_transparent_pixel; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	 * Store a stat for later output. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 	 * @param string $group The stat group. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 	 * @param string $name The stat name to bump. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	 * @return boolean true if stat successfully added | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 45 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 46 |  |  | 	public function add( $group, $name ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 47 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 48 |  |  | 		if ( ! \is_string( $group ) || ! \is_string( $name ) ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 49 |  |  | 			return false; | 
            
                                                                        
                            
            
                                    
            
            
                | 50 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 51 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 52 |  |  | 		if ( ! isset( $this->stats[ $group ] ) ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 53 |  |  | 			$this->stats[ $group ] = array(); | 
            
                                                                        
                            
            
                                    
            
            
                | 54 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 55 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 56 |  |  | 		if ( \in_array( $name, $this->stats[ $group ], true ) ) { | 
            
                                                                        
                            
            
                                    
            
            
                | 57 |  |  | 			return false; | 
            
                                                                        
                            
            
                                    
            
            
                | 58 |  |  | 		} | 
            
                                                                        
                            
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 60 |  |  | 		$this->stats[ $group ][] = $name; | 
            
                                                                        
                            
            
                                    
            
            
                | 61 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 62 |  |  | 		return true; | 
            
                                                                        
                            
            
                                    
            
            
                | 63 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	 * Gets current stats stored to be processed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	 * @return array $stats | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 	public function get_current_stats() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 		return $this->stats; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 	 * Return the stats from a group in an array ready to be added as parameters in a query string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 	 * @param string $group_name The name of the group to retrieve. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 78 |  |  | 	 * @return array Array with one item, where the key is the prefixed group and the value are all stats concatenated with a comma. If group not found, an empty array will be returned | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 	public function get_group_query_args( $group_name ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 		$stats = $this->get_current_stats(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 		if ( isset( $stats[ $group_name ] ) && ! empty( $stats[ $group_name ] ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 			return array( "x_jetpack-{$group_name}" => implode( ',', $stats[ $group_name ] ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 		return array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 	 * Gets a list of trac URLs for every stored URL | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 	 * @return array An array of URLs | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 	public function get_stats_urls() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 		$urls = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 		foreach ( $this->get_current_stats() as $group => $stat ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 			$group_query_string = $this->get_group_query_args( $group ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 			$urls[]             = $this->build_stats_url( $group_query_string ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 		return $urls; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 	 * Outputs the tracking pixels for the current stats and empty the stored stats from the object | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 	 * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 	public function do_stats() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 		$urls = $this->get_stats_urls(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 		foreach ( $urls as $url ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 			echo '<img src="' . esc_url( $url ) . '" width="1" height="1" style="display:none;" />'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 		$this->stats = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 	 * Pings the stats server for the current stats and empty the stored stats from the object | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 	 * @return void | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 	public function do_server_side_stats() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 		$urls = $this->get_stats_urls(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 		foreach ( $urls as $url ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  | 			$this->do_server_side_stat( $url ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 		$this->stats = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 	 * Runs stats code for a one-off, server-side. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 	 * @param string $url string The URL to be pinged. Should include `x_jetpack-{$group}={$stats}` or whatever we want to store. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 	 * @return bool If it worked. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                                                    
                                                                                                        
            
            
                | 139 |  | View Code Duplication | 	public function do_server_side_stat( $url ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 		$response = wp_remote_get( esc_url_raw( $url ) ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 		if ( is_wp_error( $response ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 			return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 		if ( 200 !== wp_remote_retrieve_response_code( $response ) ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 			return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 	 * Builds the stats url. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 	 * @param array $args array|string The arguments to append to the URL. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 	 * @return string The URL to be pinged. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 	public function build_stats_url( $args ) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 		$defaults = array( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 			'v'    => 'wpcom2', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 			'rand' => md5( wp_rand( 0, 999 ) . time() ), | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		$args     = wp_parse_args( $args, $defaults ); | 
                            
                    |  |  |  | 
                                                                                        
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                | 165 |  |  | 		$gifname  = true === $this->use_transparent_pixel ? 'b.gif' : 'g.gif'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 		/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 168 |  |  | 		 * Filter the URL used as the Stats tracking pixel. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 		 * @since 2.3.2 | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 		 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  | 		 * @param string $url Base URL used as the Stats tracking pixel. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 		 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 174 |  |  | 		$base_url = apply_filters( | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 			'jetpack_stats_base_url', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 176 |  |  | 			'https://pixel.wp.com/' . $gifname | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 		); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 		$url      = add_query_arg( $args, $base_url ); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 		return $url; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  |  | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 182 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 183 |  |  |  | 
            
                        
It seems like the type of the argument is not accepted by the function/method which you are calling.
In some cases, in particular if PHP’s automatic type-juggling kicks in this might be fine. In other cases, however this might be a bug.
We suggest to add an explicit type cast like in the following example: