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Widen the key type of functions that return an array key - #6222

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zonuexe wants to merge 3 commits into

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zonuexe:fix/issue-15073

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Widen the key type of functions that return an array key#6222
zonuexe wants to merge 3 commits into
phpstan:2.3.xfrom
zonuexe:fix/issue-15073

Commits on Nov 1, 2026
- Deduplicate ConstantArrayType's unsealed key type normalization
  
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  6f75295
- Widen the key type array_key_first() and array_key_last() return
  
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  340db89
- Cast array keys that are handed back as values
  
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  b45b6e9