| 1 | <?php |
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| 14 | class ResetCommand extends Command |
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| 15 | { |
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| 16 | /** |
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| 17 | * Command name |
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| 18 | * @var string |
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| 19 | */ |
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| 20 | const NAME = 'reset'; |
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| 21 | |||
| 22 | /** |
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| 23 | * {@inheritdoc} |
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| 24 | */ |
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| 25 | public function configure() |
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| 30 | |||
| 31 | /** |
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| 32 | * {@inheritdoc} |
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| 33 | */ |
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| 34 | public function execute(InputInterface $input, OutputInterface $output) |
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| 45 | } |
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| 46 |
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: