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<?php namespace Foo\Bar\Baz { $closureBeforeDefined = function () { return relativeFunction(); }; eval(' function relativeFunction() { return \'IN GLOBAL NAMESPACE\'; } '); var_dump($closureBeforeDefined()); eval(' namespace Foo\Bar\Baz; function relativeFunction() { return \'IN RELATIVE NAMESPACE\'; } '); $closureAfterDefined = function () { return relativeFunction(); }; var_dump($closureBeforeDefined()); var_dump($closureAfterDefined()); }

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