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<?php namespace Foo; class Bar { public static function testClass(): \Closure { return function(){}; } } function testFunc(): \Closure { return function(){}; } var_dump((new \ReflectionFunction(Bar::testClass()))->getNamespaceName()); var_dump((new \ReflectionFunction(testFunc()))->getNamespaceName());
Output for git.master_jit, git.master
string(0) "" string(0) ""

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