| 1 | <?php |
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| 15 | class TransactionalInterceptor implements MethodInterceptor |
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| 16 | { |
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| 17 | /** |
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| 18 | * @var ExtendedPdoInterface |
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| 19 | */ |
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| 20 | private $pdo; |
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| 21 | |||
| 22 | 4 | public function __construct(ExtendedPdoInterface $pdo = null) |
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| 26 | |||
| 27 | /** |
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| 28 | * {@inheritdoc} |
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| 29 | */ |
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| 30 | 3 | public function invoke(MethodInvocation $invocation) |
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| 51 | } |
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| 52 |
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 sub-classes 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 parent class: