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$data_set_post = 'data_business_contact';
$data_set_save = 'data_contact_info';

if ($request->has($data_set_post)) {
    $data = $request->input($data_set_post);

    if (isset($data['email'])) {
        $data['email'] = array_filter($data['email']);
        sort($data['email']);
    }

    if (isset($data['phone'])) {
        $data['phone'] = array_filter($data['phone']);
        sort($data['phone']);
    }

    // Save the processed data into another request key as JSON
    $request->merge([$data_set_save => json_encode($data)]);
    $request->request->remove($data_set_post);
}