PHP curl CURLOPT_RESOLVE not working - php

Question

I have example.com on two different servers, I use php curl to connect to one server, do some tasks and then try to connect to another server and do some other tasks, but it doesn't obey the CURLOPT_RESOLVE second time as you can see in the verbose output.
I tried CURLOPT_DNS_CACHE_TIMEOUT set to 0 but still connects to old ip.
Any idea how i can fix it?
I can not connect to ip's directly unfortunately.
* Added example.com:80:207.230.220.255 to DNS cache
* Hostname was found in DNS cache
* Trying 207.97.92.288...
* Connected to example.com (207.97.92.288) port 80 (#0)
> GET /example.php HTTP/1.1
Host: example.com
Accept: */*
< HTTP/1.1 404 Not Found
< Date: Tue, 05 Apr 2016 18:00:58 GMT
* Server Apache is not blacklisted
< Server: Apache
< Accept-Ranges: bytes
< Transfer-Encoding: chunked
< Content-Type: text/html
<
* Connection #0 to host example.com left intact
EDIT *******
Added code :
$check_ping_resolve = ["example.com:80:207.230.220.255"];
$check_ping = "http://example.com/123.php";
$check_ping_verbose = fopen(dirname(__FILE__) . '/ping.txt', 'w');
$check_ping_curl = curl_init();
curl_setopt($check_ping_curl, CURLOPT_SSL_VERIFYHOST,0);
curl_setopt($check_ping_curl, CURLOPT_SSL_VERIFYPEER,0);
curl_setopt($check_ping_curl, CURLOPT_RETURNTRANSFER,1);
curl_setopt($check_ping_curl, CURLOPT_DNS_CACHE_TIMEOUT, 0);
curl_setopt($check_ping_curl, CURLOPT_RESOLVE, $check_ping_resolve);
curl_setopt($check_ping_curl, CURLOPT_URL, $check_ping);
curl_setopt($check_ping_curl, CURLOPT_VERBOSE, 1);
curl_setopt($check_ping_curl, CURLOPT_STDERR, $check_ping_verbose);
$check_ping_curl_result = curl_exec($check_ping_curl);

Answer 1

I had the same problem, I solved it by adding this option:
curl_setopt($ch, CURLOPT_DNS_USE_GLOBAL_CACHE, false);

Answer 2

As mentioned in the official documentation for the CURLOPT_RESOLVE option:
Remove names from the DNS cache again, to stop providing these fake resolves, by including a string in the linked list that uses the format "-HOST:PORT". The host name must be prefixed with a dash, and the host name and port number must exactly match what was already added previously.
So when you send a request to the second server you have to remove mapping for the previously used server IP address as well:
$check_ping_resolve = [
'-example.com:80:207.97.92.288',
'example.com:80:207.230.220.255'
];