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 | class Tools |
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| 6 | { |
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| 7 | /** |
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| 8 | * 记录日志 |
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| 9 | * |
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| 10 | * @param $title |
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| 11 | * @param $data |
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| 12 | * @param $path |
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| 13 | * |
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| 14 | * @return int |
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| 15 | */ |
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| 16 | public static function dataRecodes($title, $data, $path) |
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| 21 | /** |
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| 22 | * 验证签名 成功 true 失败 false |
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| 23 | * |
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| 24 | * @param $token |
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| 25 | * |
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| 26 | * @return bool |
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| 27 | */ |
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| 28 | public static function verifySignature($token) |
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| 49 | } |
Instead of super-globals, we recommend to explicitly inject the dependencies of your class. This makes your code less dependent on global state and it becomes generally more testable: