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fix(openapi): document array query params once - #8638
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soyuka merged 2 commits intoOct 6, 2026
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A filterless array query parameter was documented as both `key` and `key[]` (deepObject). Document it once, as `key[]` with form/explode, unless castToArray is false.
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Follow-up of #8600. A filterless array
QueryParameterwas documented twice whencastToArrayis unset:key(form, which describeskey=1&key=2, collapsed to the last value by PHP) andkey[]withstyle: deepObject, which OpenAPI only defines for objects.It is now documented once:
castToArraynull or true:key[],style: form,explode: true(key[]=1&key[]=2)castToArray: false, or a key already ending with[]: the key as writtenIncludes #8636 (cherry-picked) so the 5.0 merge-up is a no-op. This changes the generated OpenAPI document, hence main only.