Improve return type of base64_decode() #4492
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- Detect when the result cannot be false - Correctly treat non-boolean $strict parameter
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| return new StringType(); | ||
| if ($isStrict->maybe() && $isValidBase64->maybe()) { | ||
| return new BenevolentUnionType([new StringType(), new ConstantBooleanType(false)]); |
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Why a benevolent one ? I think it should be a simple union
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I figured if the strictness is unclear (which almost never happens), then a benevolent union is better (based on the previous behavior). But of course this can be changed.
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Oh, didn't know it was the previous behavior.
Indeed https://phpstan.org/r/54560d00-fc90-4e4f-bc72-74a670a8e415
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Fix handling of non-bools as
$strictparameter and omitfalsefrom return type when$stringis valid base64.This is useful when constant binary strings are required in code, e.g.:
Related to phpstan/phpstan#7866