Fix array fill keys for decimal int strings#6077
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BackEndTea
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Jul 21, 2026
| assertType("array<string, null>", array_fill_keys($foo, null)); | ||
| assertType("array<int, null>", array_fill_keys($bar, null)); | ||
| assertType("array<'foo', null>", array_fill_keys($baz, null)); | ||
| assertType("array<numeric-string&uppercase-string, null>", array_fill_keys($floats, null)); |
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The fix is in line with actual PHP behaviour, but i'm not sure if this result is intentional for BC break purposes.
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Fix phpstan/phpstan#14980