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04bb2b1182
* Prevent invalid Traversable implementation Fixes vimeo/psalm#5167 * Document new issue * CS fix
11 lines
269 B
Markdown
11 lines
269 B
Markdown
# InvalidTraversableImplementation
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Emitted when class incorrectly implements Traversable. Traversable needs to be
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implemented by implementing either `IteratorAggregate` or `Iterator`
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```php
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<?php
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final class C implements Traversable {} // will cause fatal error
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```
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