Duplicate code is one of the most pungent code smells. A rule that is often used is to re-structure code once it is duplicated in three or more places.
Common duplication problems, and corresponding solutions are:
1 | <?php |
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13 | class Tracking { |
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14 | /** |
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15 | * Slug of the product that we are tracking. |
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16 | * |
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17 | * @var string |
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18 | */ |
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19 | private $product_name; |
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20 | |||
21 | /** |
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22 | * Connection manager object. |
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23 | * |
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24 | * @var Object |
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25 | */ |
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26 | private $connection; |
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27 | |||
28 | /** |
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29 | * Creates the Tracking object. |
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30 | * |
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31 | * @param String $product_name the slug of the product that we are tracking. |
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32 | * @param Automattic\Jetpack\Connection\Manager $connection the connection manager object. |
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33 | */ |
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34 | public function __construct( $product_name = 'jetpack', $connection = null ) { |
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42 | |||
43 | /** |
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44 | * Enqueue script necessary for tracking. |
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45 | */ |
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46 | View Code Duplication | public function enqueue_tracks_scripts() { |
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57 | |||
58 | /** |
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59 | * Send an event in Tracks. |
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60 | * |
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61 | * @param string $event_type Type of the event. |
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62 | * @param array $data Data to send with the event. |
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63 | * @param mixed $user username, user_id, or WP_user object. |
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64 | */ |
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65 | public function record_user_event( $event_type, $data = array(), $user = null ) { |
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86 | |||
87 | /** |
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88 | * Record an event in Tracks - this is the preferred way to record events from PHP. |
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89 | * |
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90 | * @param mixed $user username, user_id, or WP_user object. |
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91 | * @param string $event_name The name of the event. |
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92 | * @param array $properties Custom properties to send with the event. |
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93 | * @param int $event_timestamp_millis The time in millis since 1970-01-01 00:00:00 when the event occurred. |
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94 | * |
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95 | * @return bool true for success | \WP_Error if the event pixel could not be fired |
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96 | */ |
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97 | public function tracks_record_event( $user, $event_name, $properties = array(), $event_timestamp_millis = false ) { |
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118 | |||
119 | /** |
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120 | * Determines whether tracking should be enabled. |
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121 | * |
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122 | * @param Automattic\Jetpack\Terms_Of_Service $terms_of_service A Terms_Of_Service object. |
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123 | * @param Automattic\Jetpack\Status $status A Status object. |
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124 | * |
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125 | * @return boolean True if tracking should be enabled, else false. |
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126 | */ |
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127 | public function should_enable_tracking( $terms_of_service, $status ) { |
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134 | |||
135 | /** |
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136 | * Procedurally build a Tracks Event Object. |
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137 | * NOTE: Use this only when the simpler Automattic\Jetpack\Tracking->jetpack_tracks_record_event() function won't work for you. |
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138 | * |
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139 | * @param WP_user $user WP_user object. |
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140 | * @param string $event_name The name of the event. |
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141 | * @param array $properties Custom properties to send with the event. |
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142 | * @param int $event_timestamp_millis The time in millis since 1970-01-01 00:00:00 when the event occurred. |
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143 | * |
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144 | * @return \Jetpack_Tracks_Event|\WP_Error |
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145 | */ |
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146 | private function tracks_build_event_obj( $user, $event_name, $properties = array(), $event_timestamp_millis = false ) { |
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170 | |||
171 | /** |
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172 | * Get the identity to send to tracks. |
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173 | * |
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174 | * @param int $user_id The user id of the local user. |
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175 | * |
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176 | * @return array $identity |
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177 | */ |
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178 | public function tracks_get_identity( $user_id ) { |
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217 | } |
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218 |
This check looks for
@param
annotations where the type inferred by our type inference engine differs from the declared type.It makes a suggestion as to what type it considers more descriptive.
Most often this is a case of a parameter that can be null in addition to its declared types.