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<?php $ar = array('a' => 'b'); function cb($v) { return $v; } function keys($v, $k) { return $k; } //print_r(array_map('cb', $ar)); $keys = array_map('keys', $ar, array_keys($ar)); print_r($keys); //print_r(array_map('cb', $ar, $keys));
Output for git.master, git.master_jit, rfc.property-hooks
Array ( [0] => a )

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