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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| 12 | class AnomalyModulePreferencesUpdateUserRelatedConfig extends Migration  | 
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| 13 | { | 
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| 14 | |||
| 15 | /**  | 
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| 16 | * Run the migrations.  | 
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| 17 | *  | 
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| 18 | * @return void  | 
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| 19 | */  | 
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| 20 | View Code Duplication | public function up()  | 
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| 32 | |||
| 33 | /**  | 
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| 34 | * Reverse the migrations.  | 
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| 35 | *  | 
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| 36 | * @return void  | 
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| 37 | */  | 
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| 38 | View Code Duplication | public function down()  | 
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| 50 | }  | 
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| 51 | 
You can fix this by adding a namespace to your class:
When choosing a vendor namespace, try to pick something that is not too generic to avoid conflicts with other libraries.