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<?php $array = explode(' ', 'foo bar is very nice'); var_dump(array_walk($array, function($v){return $v;}), $array);
Output for git.master, git.master_jit, rfc.property-hooks
bool(true) array(7) { [0]=> string(3) "foo" [1]=> string(0) "" [2]=> string(3) "bar" [3]=> string(2) "is" [4]=> string(0) "" [5]=> string(4) "very" [6]=> string(4) "nice" }

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