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<?php $items = array( array( array("Color" => "Blue"), array("Size" => "S") ), array( array("Color" => "Blue"), array("Size" => "M") ) ); $new_items = array_map(function ($item) { $seed = array(); return array_reduce($item, function ($seed, $key_values) { return array_map(function ($value) { $seed[] = $value; }, $key_values); return $seed; }, array()); }, $items); var_dump($new_items);
Output for git.master, git.master_jit, rfc.property-hooks
array(2) { [0]=> array(1) { ["Size"]=> NULL } [1]=> array(1) { ["Size"]=> NULL } }

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