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<?php |
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/** |
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* Jetpack MC Stats package. |
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* |
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* @package automattic/jetpack-mc-stats |
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*/ |
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namespace Automattic\Jetpack; |
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/** |
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* Class MC Stats, used to record stats using https://pixel.wp.com/g.gif |
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*/ |
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class A8c_Mc_Stats { |
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/** |
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* Holds the stats to be processed |
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* |
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* @var array |
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*/ |
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private $stats = array(); |
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/** |
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* Indicates whether to use the transparent pixel (b.gif) instead of the regular smiley (g.gif) |
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* |
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* @var boolean |
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*/ |
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public $use_transparent_pixel = true; |
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/** |
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* Class Constructor |
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* |
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* @param boolean $use_transparent_pixel Use the transparent pixel instead of the smiley. |
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*/ |
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public function __construct( $use_transparent_pixel = true ) { |
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$this->use_transparent_pixel = $use_transparent_pixel; |
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} |
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/** |
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* Store a stat for later output. |
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* |
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* @param string $group The stat group. |
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* @param string $name The stat name to bump. |
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* |
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* @return boolean true if stat successfully added |
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*/ |
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public function add( $group, $name ) { |
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if ( ! \is_string( $group ) || ! \is_string( $name ) ) { |
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return false; |
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} |
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if ( ! isset( $this->stats[ $group ] ) ) { |
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$this->stats[ $group ] = array(); |
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} |
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if ( \in_array( $name, $this->stats[ $group ], true ) ) { |
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return false; |
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} |
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$this->stats[ $group ][] = $name; |
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return true; |
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} |
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/** |
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* Gets current stats stored to be processed |
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* |
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* @return array $stats |
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*/ |
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public function get_current_stats() { |
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return $this->stats; |
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} |
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/** |
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* Return the stats from a group in an array ready to be added as parameters in a query string |
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* |
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* @param string $group_name The name of the group to retrieve. |
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* @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 |
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*/ |
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public function get_group_query_args( $group_name ) { |
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$stats = $this->get_current_stats(); |
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if ( isset( $stats[ $group_name ] ) && ! empty( $stats[ $group_name ] ) ) { |
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return array( "x_jetpack-{$group_name}" => implode( ',', $stats[ $group_name ] ) ); |
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} |
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return array(); |
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} |
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/** |
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* Gets a list of trac URLs for every stored URL |
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* |
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* @return array An array of URLs |
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*/ |
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public function get_stats_urls() { |
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$urls = array(); |
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foreach ( $this->get_current_stats() as $group => $stat ) { |
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$group_query_string = $this->get_group_query_args( $group ); |
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$urls[] = $this->build_stats_url( $group_query_string ); |
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} |
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return $urls; |
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} |
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/** |
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* Outputs the tracking pixels for the current stats and empty the stored stats from the object |
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* |
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* @return void |
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*/ |
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public function do_stats() { |
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$urls = $this->get_stats_urls(); |
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foreach ( $urls as $url ) { |
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echo '<img src="' . esc_url( $url ) . '" width="1" height="1" style="display:none;" />'; |
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} |
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$this->stats = array(); |
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} |
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/** |
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* Pings the stats server for the current stats and empty the stored stats from the object |
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* |
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* @return void |
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*/ |
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public function do_server_side_stats() { |
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$urls = $this->get_stats_urls(); |
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foreach ( $urls as $url ) { |
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$this->do_server_side_stat( $url ); |
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} |
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$this->stats = array(); |
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} |
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/** |
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* Runs stats code for a one-off, server-side. |
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* |
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* @param string $url string The URL to be pinged. Should include `x_jetpack-{$group}={$stats}` or whatever we want to store. |
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* |
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* @return bool If it worked. |
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*/ |
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View Code Duplication |
public function do_server_side_stat( $url ) { |
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$response = wp_remote_get( esc_url_raw( $url ) ); |
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if ( is_wp_error( $response ) ) { |
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return false; |
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} |
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if ( 200 !== wp_remote_retrieve_response_code( $response ) ) { |
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return false; |
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} |
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return true; |
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} |
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/** |
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* Builds the stats url. |
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* |
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* @param array $args array|string The arguments to append to the URL. |
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* |
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* @return string The URL to be pinged. |
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*/ |
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public function build_stats_url( $args ) { |
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$defaults = array( |
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'v' => 'wpcom2', |
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'rand' => md5( wp_rand( 0, 999 ) . time() ), |
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); |
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$args = wp_parse_args( $args, $defaults ); |
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$gifname = true === $this->use_transparent_pixel ? 'b.gif' : 'g.gif'; |
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/** |
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* Filter the URL used as the Stats tracking pixel. |
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* |
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* @since 2.3.2 |
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* |
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* @param string $url Base URL used as the Stats tracking pixel. |
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*/ |
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$base_url = apply_filters( |
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'jetpack_stats_base_url', |
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'https://pixel.wp.com/' . $gifname |
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); |
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$url = add_query_arg( $args, $base_url ); |
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return $url; |
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} |
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} |
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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: