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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| 15 | class latest_members extends module_base  | 
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| 16 | { | 
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| 17 | /**  | 
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| 18 | * Allowed columns: Just sum up your options (Exp: left + right = 10)  | 
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| 19 | * top 1  | 
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| 20 | * left 2  | 
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| 21 | * center 4  | 
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| 22 | * right 8  | 
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| 23 | * bottom 16  | 
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| 24 | */  | 
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| 25 | public $columns = 10;  | 
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| 26 | |||
| 27 | /**  | 
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| 28 | * Default modulename  | 
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| 29 | */  | 
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| 30 | public $name = 'LATEST_MEMBERS';  | 
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| 31 | |||
| 32 | /**  | 
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| 33 | * Default module-image:  | 
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| 34 | 	* file must be in "{T_THEME_PATH}/images/portal/" | 
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| 35 | */  | 
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| 36 | public $image_src = 'portal_members.png';  | 
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| 37 | |||
| 38 | /**  | 
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| 39 | * module-language file  | 
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| 40 | 	* file must be in "language/{$user->lang}/mods/portal/" | 
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| 41 | */  | 
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| 42 | public $language = 'portal_latest_members_module';  | 
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| 43 | |||
| 44 | /** @var \phpbb\config\config */  | 
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| 45 | protected $config;  | 
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| 46 | |||
| 47 | /** @var \phpbb\db\driver\driver_interface */  | 
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| 48 | protected $db;  | 
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| 49 | |||
| 50 | /** @var \phpbb\template\template */  | 
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| 51 | protected $template;  | 
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| 52 | |||
| 53 | /** @var \phpbb\user */  | 
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| 54 | protected $user;  | 
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| 55 | |||
| 56 | /**  | 
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| 57 | * Construct a latest_members object  | 
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| 58 | *  | 
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| 59 | * @param \phpbb\config\config $config phpBB config  | 
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| 60 | * @param \phpbb\db\driver\driver_interface $db phpBB db driver  | 
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| 61 | * @param \phpbb\template\template $template phpBB template  | 
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| 62 | * @param \phpbb\user $user phpBB user object  | 
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| 63 | */  | 
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| 64 | View Code Duplication | public function __construct($config, $db, $template, $user)  | 
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| 71 | |||
| 72 | /**  | 
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| 73 | 	* {@inheritdoc} | 
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| 74 | */  | 
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| 75 | public function get_template_side($module_id)  | 
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| 95 | |||
| 96 | /**  | 
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| 97 | 	* {@inheritdoc} | 
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| 98 | */  | 
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| 99 | View Code Duplication | public function get_template_acp($module_id)  | 
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| 109 | |||
| 110 | /**  | 
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| 111 | 	* {@inheritdoc} | 
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| 112 | */  | 
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| 113 | public function install($module_id)  | 
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| 118 | |||
| 119 | /**  | 
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| 120 | 	* {@inheritdoc} | 
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| 121 | */  | 
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| 122 | View Code Duplication | public function uninstall($module_id, $db)  | 
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| 131 | }  | 
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| 132 |