1 | <?php |
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7 | trait ProductTrait |
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8 | { |
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9 | /** |
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10 | * @var boolean |
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11 | * |
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12 | * @ORM\Column(type="boolean") |
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13 | */ |
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14 | protected $validBarCode = false; |
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15 | |||
16 | /** |
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17 | * @return bool |
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18 | */ |
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19 | public function isValidBarCode(): bool |
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23 | |||
24 | /** |
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25 | * @param bool $validBarCode |
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26 | * @return ProductTrait |
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27 | */ |
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28 | public function setValidBarCode(bool $validBarCode) |
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33 | } |
In PHP traits cannot be used for type-hinting as they do not define a well-defined structure. This is because any class that uses a trait can rename that trait’s methods.
If you would like to return an object that has a guaranteed set of methods, you could create a companion interface that lists these methods explicitly.