CURLOPT_TIMECONDITION

CURLOPT_TIMECONDITION is one of the accepted parameters for curl_setopt parameter #2.

CURLOPT_TIMECONDITION — Set how CURLOPT_TIMEVALUE is treated. Use CURL_TIMECOND_IFMODSINCE to return the page only if it has been modified since the time specified in CURLOPT_TIMEVALUE. If it hasn't been modified, a 304 Not Modified header will be returned assuming CURLOPT_HEADER is true. Use CURL_TIMECOND_IFUNMODSINCE for the reverse effect. Use CURL_TIMECOND_NONE to ignore CURLOPT_TIMEVALUE and always return the page. CURL_TIMECOND_NONE is the default. Prior to cURL 7.46.0 the default was CURL_TIMECOND_IFMODSINCE. Available as of cURL 7.1.0.

CURLOPT_TIMECONDITION = 33;