array_unique 2nd parameter may restrict the array items type
#7.956 aberto em 13 de mai. de 2022
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Description
Hi,
the array_unique() function has an optional 2nd parameter flag, which is one of the following value:
SORT_REGULARSORT_NUMERICSORT_STRING(default value)SORT_LOCALE_STRING
if the flag is one of SORT_LOCALE or SORT_LOCALE_STRING, the array should only contain strings or values that can be casted to string. I'm not sure exactly what the definition should be, maybe: int|float|string|bool|\Stringable|null
Here we can see it fail : https://3v4l.org/lJsCp
and here we can see that Psalm does not find any error: https://psalm.dev/r/2135f5de25
edit: I realized that the SORT_NUMERIC also restrict the item type, probably something like int|float|string|null