1 | <?php |
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14 | class Broadcaster |
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15 | { |
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16 | protected $notifiable; |
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17 | protected $channel; |
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18 | protected $config; |
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19 | protected $channelName; |
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20 | |||
21 | /** |
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22 | * Broadcaster constructor. |
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23 | * |
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24 | * @param NotifiableInterface $notifiable |
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25 | * @param ChannelInterface $channel |
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26 | * @param array $config |
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27 | */ |
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28 | public function __construct(NotifiableInterface $notifiable, ChannelInterface $channel, array $config) |
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45 | |||
46 | /** |
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47 | * @param NotificationInterface $notification |
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48 | */ |
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49 | public function broadcast(NotificationInterface $notification) |
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58 | } |
Let’s take a look at an example:
In the above example, the authenticate() method works fine as long as you just pass instances of MyUser. However, if you now also want to pass a different implementation of User which does not have a getDisplayName() method, the code will break.
Available Fixes
Change the type-hint for the parameter:
Add an additional type-check:
Add the method to the interface: