Fix IntersectionType::isIterableOnce #4106
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VincentLanglet
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ondrejmirtes
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Jul 21, 2025
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Also, there might be more candidates to also use a filter in IntersectionType: hasOffsetValueType/getOffsetValueTypesetOffsetValueType (should use isOffsetAccessible) Feel free to explore that with a failing test in a separate PR. Thank you! |
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But maybe not because ObjectType::isOffsetAccessible() says "maybe" for non-final classes which is correct. |
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Closes phpstan/phpstan#13248
I feel like non-iterable should be excluded since as soon as one subtype is iterable the whole intersection is iterable.