我有一个PHP脚本，用于向一个Web服务发送curl请求。请求是由我的服务器发出的，该服务器安装了SSL，我发送请求的Web服务也安装了SSL。
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, "https://webservice.com?wsdl");
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_TIMEOUT, 60000);
curl_setopt($ch, CURLOPT_CONNECTTIMEOUT, 10);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);//My post data
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, true);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, 2);
curl_setopt($ch, CURLOPT_CAINFO, "../cacerts.pem");
curl_setopt($ch, CURLOPT_CAPATH, "../cacerts.pem");
$headers = [];
array_push($headers, 'Content-Type: text/xml;charset=UTF-8');
array_push($headers, 'SoapAction: *');
curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
$content = trim(curl_exec($ch));
var_dump($content);
var_dump(curl_getinfo($ch));
var_dump(curl_errno($ch));
var_dump(curl_error($ch));
curl_close($ch);
我得到的调试信息如下所示：
array (size=26)
'url' => string 'https://webservice.com?wsdl' (length=42)
'content_type' => string 'text/xml;charset=utf-8' (length=22)
'http_code' => int 200
'header_size' => int 165
'request_size' => int 901
'filetime' => int -1
'ssl_verify_result' => int 0
'redirect_count' => int 0
'total_time' => float 1.469
'namelookup_time' => float 0.25
'connect_time' => float 0.688
'pretransfer_time' => float 1.188
'size_upload' => float 632
'size_download' => float 536
'speed_download' => float 364
'speed_upload' => float 430
'download_content_length' => float 536
'upload_content_length' => float 632
'starttransfer_time' => float 1.469
'redirect_time' => float 0
'redirect_url' => string '' (length=0)
'primary_ip' => string 'xxx.xxx.xxx.xxx' (length=15)
'certinfo' =>
array (size=0)
empty
'primary_port' => int 443
'local_ip' => string 'xx.xx.xx.x' (length=10)
'local_port' => int 61993
“certinfo”为空数组是正常的吗？如果不是，为什么会为空。 谢谢。