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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| 5 | View Code Duplication | class GET extends Method |
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| 6 | { |
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| 8 | public function getFormAttributes () |
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| 13 | public function getValue ($key, $default) |
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| 18 | public function hasValue ($key) |
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| 23 | } |