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 Jetpack_XMLRPC_Methods { | 
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| 14 | |||
| 15 | /**  | 
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| 16 | * Initialize the main hooks.  | 
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| 17 | */  | 
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| 18 | 	public static function init() { | 
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| 22 | |||
| 23 | /**  | 
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| 24 | * Adds Jetpack specific methods to the methods added by the Connection package.  | 
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| 25 | *  | 
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| 26 | * @param array $methods Methods added by the Connection package.  | 
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| 27 | */  | 
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| 28 | 	public function xmlrpc_methods( $methods ) { | 
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| 35 | |||
| 36 | /**  | 
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| 37 | * Returns what features are available. Uses the slug of the module files.  | 
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| 38 | *  | 
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| 39 | * @return array  | 
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| 40 | */  | 
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| 41 | View Code Duplication | 	public static function features_available() { | 
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| 50 | |||
| 51 | /**  | 
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| 52 | * Returns what features are enabled. Uses the slug of the modules files.  | 
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| 53 | *  | 
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| 54 | * @return array  | 
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| 55 | */  | 
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| 56 | View Code Duplication | 	public static function features_enabled() { | 
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| 65 | |||
| 66 | /**  | 
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| 67 | * Filters the result of test_connection XMLRPC method  | 
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| 68 | *  | 
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| 69 | * @return string The current Jetpack version number  | 
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| 70 | */  | 
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| 71 | 	public function test_connection() { | 
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| 74 | }  | 
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| 75 |