1 | <?php |
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12 | abstract class Calculator |
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13 | { |
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14 | /** |
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15 | * @param ContainerCollection $containerCollection |
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16 | * @param string $targetKey |
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17 | * @param mixed $start |
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18 | * @param mixed $end |
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19 | */ |
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20 | public function __construct(ContainerCollection $containerCollection, $targetKey, $start, $end) |
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27 | |||
28 | /** |
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29 | * @param callable $func |
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30 | * @return ContainerCollection |
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31 | * @throws \Ayaml\AyamlSchemaNotSpecifiedException |
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32 | */ |
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33 | public function by(callable $func) |
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48 | |||
49 | /** |
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50 | * @param $overwriteVal |
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51 | * @return bool |
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52 | */ |
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53 | abstract public function isEnd($overwriteVal); |
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54 | } |
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55 |
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: