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<?php $fx = function($string) { return $string; }; ob_start($fx); print_r(ob_list_handlers()); ob_end_flush(); print_r([$fx]);
Output for git.master_jit, git.master, rfc.property-hooks
Array ( [0] => Closure::__invoke ) Array ( [0] => Closure Object ( [parameter] => Array ( [$string] => <required> ) ) )

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