| 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: