解决方法
检查CURLINFO_FILETIME:
$ch = curl_init('http://www.mysite.com/index.PHP'); curl_setopt($ch,CURLOPT_FILETIME,true); curl_setopt($ch,CURLOPT_RETURNTRANSFER,CURLOPT_NOBODY,true); $exec = curl_exec($ch); $fileTime = curl_getinfo($ch,CURLINFO_FILETIME); if ($fileTime > -1) { echo date("Y-m-d H:i",$fileTime); }