I have an array $data

 fruit => apple,
 seat => sofa,

etc. I want to loop through so that each key becomes type_key[0]['value'] so eg

 type_fruit[0]['value'] => apple,
 type_seat[0]['value'] => sofa,

and what I thought would do this, namely

foreach ($data as $key => $value)
{
        # Create a new, renamed, key. 
        $array[str_replace("/(.+)/", "type_$1[0]['value']", $key)] = $value;

        # Destroy the old key/value pair
        unset($array[$key]);

}

print_r($array);

Doesn't work. How can I make it work?

Also, I want everything to be in the keys (not the values) to be lowercase: is there an easy way of doing this too? Thanks.