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 Status { |
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| 14 | |||
| 15 | /** |
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| 16 | * Prefix of the blog lock transient. |
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| 17 | * |
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| 18 | * @access public |
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| 19 | * |
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| 20 | * @var string |
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| 21 | */ |
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| 22 | const STATUS_OPTION = 'sync_health_status'; |
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| 23 | |||
| 24 | /** |
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| 25 | * Status key in option array. |
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| 26 | * |
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| 27 | * @access public |
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| 28 | * |
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| 29 | * @var string |
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| 30 | */ |
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| 31 | const OPTION_STATUS_KEY = 'status'; |
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| 32 | |||
| 33 | /** |
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| 34 | * Timestamp key in option array. |
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| 35 | * |
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| 36 | * @access public |
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| 37 | * |
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| 38 | * @var string |
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| 39 | */ |
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| 40 | const OPTION_TIMESTAMP_KEY = 'timestamp'; |
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| 41 | |||
| 42 | /** |
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| 43 | * Unknown status code. |
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| 44 | * |
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| 45 | * @access public |
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| 46 | * |
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| 47 | * @var string |
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| 48 | */ |
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| 49 | const STATUS_UNKNOWN = 'unknown'; |
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| 50 | |||
| 51 | /** |
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| 52 | * Out of sync status code. |
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| 53 | * |
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| 54 | * @access public |
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| 55 | * |
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| 56 | * @var string |
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| 57 | */ |
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| 58 | const STATUS_OUT_OF_SYNC = 'out_of_sync'; |
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| 59 | |||
| 60 | /** |
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| 61 | * In sync status code. |
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| 62 | * |
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| 63 | * @access public |
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| 64 | * |
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| 65 | * @var string |
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| 66 | */ |
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| 67 | const STATUS_IN_SYNC = 'in_sync'; |
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| 68 | |||
| 69 | /** |
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| 70 | * Initializing status code. |
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| 71 | * |
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| 72 | * @access public |
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| 73 | * |
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| 74 | * @var string |
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| 75 | */ |
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| 76 | const STATUS_INITIALIZING = 'initializing'; |
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| 77 | |||
| 78 | /** |
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| 79 | * Get a human-readable Sync Health Status. |
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| 80 | * |
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| 81 | * @return string Sync Health Status |
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| 82 | */ |
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| 83 | public static function get_status() { |
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| 100 | |||
| 101 | /** |
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| 102 | * Update Sync Health Status. |
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| 103 | * |
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| 104 | * @param string $status Sync Status. |
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| 105 | */ |
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| 106 | public static function update_status( $status ) { |
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| 125 | |||
| 126 | /** |
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| 127 | * Check if Status has been previously set. |
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| 128 | * |
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| 129 | * @return bool is a Status defined |
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| 130 | */ |
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| 131 | public static function is_status_defined() { |
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| 140 | |||
| 141 | } |