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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15 | View Code Duplication | class alpha2 extends \phpbb\db\migration\migration |
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16 | { |
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17 | static public function depends_on() |
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25 | public function update_data() |
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31 | } |
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