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<?php $var = 'test'; $var2 = 'test2'; $func = function()use($var,$var2) { echo $var; }; $ref = new ReflectionFunction($func); var_dump($ref); $functionParameters = []; var_dump($ref->getStaticVariables());
Output for 8.4.1 - 8.4.18, 8.5.0 - 8.5.3
object(ReflectionFunction)#2 (1) { ["name"]=> string(21) "{closure:/in/hDl07:6}" } array(2) { ["var"]=> string(4) "test" ["var2"]=> string(5) "test2" }
Output for 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.34, 8.2.0 - 8.2.30, 8.3.0 - 8.3.30
object(ReflectionFunction)#2 (1) { ["name"]=> string(9) "{closure}" } array(2) { ["var"]=> string(4) "test" ["var2"]=> string(5) "test2" }

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