Description:
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property_exists() rejects closures with "Closure object cannot have properties" rather than simply always returning false.

Since closures pass is_object() test, it's hard to avoid this error without testing for "instanceof Closure" as well, which is discouraged in the docs.


Reproduce code:
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$obj = function(){}

is_object($obj) && property_exists($obj,'foo');


Expected result:
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false

(either they should not be considered objects, or property_exists should accept any object).


Actual result:
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"Closure object cannot have properties"