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:
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5 | class m170127_102220_change_recovery_template extends Migration |
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7 | View Code Duplication | public function up() |
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22 | View Code Duplication | public function down() |
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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.