php curl 打开https网站

下面这样是可以的：

	$url = 'https://www.google.com.hk';

	$ch = curl_init();
	curl_setopt($ch, CURLOPT_URL, $url);
	curl_setopt($ch, CURLOPT_HEADER, false);
	curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
	curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, false);
	curl_setopt($ch, CURLOPT_USERAGENT, 'Mozilla/5.0 (Windows NT 6.1) AppleWebKit/537.11 (KHTML, like Gecko) Chrome/23.0.1271.1 Safari/537.11');

	$res = curl_exec($ch);
	$rescode = curl_getinfo($ch, CURLINFO_HTTP_CODE); 
	curl_close($ch) ;
	echo $res;