how to get all properties from the existing CurlHandle object?

Question

I have such a code:

$ch = curl_init();
curl_setopt($ch, OPTION_1, value1);
***
curl_setopt($ch, OPTION_2, value2);
***
curl_setopt($ch, OPTION_N, valueN);
***
curl_exec($ch);

where curl_setopt operators are in different (sub)procedures so I need to just extract all the properties of the $ch CurlHandle object in a some way to check them visually before of execution of curl_exec($ch).

Is there any way to do this?