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<?php $arr = array('key' => 'value'); //array_map(function($k, $v){var_dump($k, $v);}, array_keys($arr), $arr); array_map(function(&$a){ var_dump($a); }, $arr);
Output for git.master, git.master_jit, rfc.property-hooks
Warning: {closure}(): Argument #1 ($a) must be passed by reference, value given in /in/igCoe on line 5 string(5) "value"

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