| 1 | <?php |
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| 7 | abstract class Transform |
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| 8 | { |
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| 9 | protected $bulider; |
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| 10 | |||
| 11 | public function __construct(Builder $builder) |
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| 15 | |||
| 16 | public function getBuilder() |
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| 20 | |||
| 21 | /** |
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| 22 | * Impelment in all discrete classes |
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| 23 | * @param array $config input |
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| 24 | * @return array output config |
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| 25 | */ |
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| 26 | abstract public function transform($config); |
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| 27 | } |
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| 28 |
In PHP it is possible to write to properties without declaring them. For example, the following is perfectly valid PHP code:
Generally, it is a good practice to explictly declare properties to avoid accidental typos and provide IDE auto-completion: