How to get an option previously set with curl_setopt()?

I'm just wondering as there is no curl_getopt() function, how it is possible to find out which value has been set for a specific option with cur开发者_运维问答l_setopt() previously?

Pulled from various answers around the internets:

Question: Is there a way to get the current curl option settings? Like a curl_getopt() or curl_showopts()?

Answer: Yes and no. There is curl_getinfo() which will show you some info about the last connection, but I suspect it's not what you're looking for. It's a weakness in curl, IMHO.

My suggestion (and others) is to encapsulate cURL into a class where your $cURL->setOpt() function also stores the value for retrieval later.

The multirequest PHP library has this functionality (and then some!):

$request = new \MultiRequest\Request($url);
$request->setCurlOption(CURLOPT_PROXY, $proxy);
// ...
$curlOptions = $request->getCurlOptions();
list($proxyIp, $proxyPort) = explode(':', $curlOptions[CURLOPT_PROXY]);

Possibly curl_getinfo() may satisfy some of your needs. If not, you can write a wrapper of curl_setopt() which saves all options to an array.

    // in C version of libcurl
    CURLcode code;
    CURL *curl = curl_easy_init();
    if (curl){
        // Set CURL option
        code = curl_easy_setopt(curl, 
                                CURLOPT_URL,    
                                "https://curl.se/libcurl/c/CURLINFO_EFFECTIVE_URL.html");
        // Get CURL option
        char *request_url = NULL;
        code = curl_easy_getinfo(curl, CURLINFO_EFFECTIVE_URL, &request_url);
        if (CURLE_OK == code && request_url){
            printf("URL: %s", request_url);
        }
        curl_easy_cleanup(curl);
    }