PHP curl携带CA证书访问https

 curl_setopt($ch,CURLOPT_SSL_VERIFYPEER,true); 
curl_setopt($ch, CURLOPT_SSLCERT,dirname(__FILE__)."/card_test/apiclient_cert.pem"); //client.

curl_setopt($ch, CURLOPT_SSLKEY, dirname(__FILE__)."/card_test/apiclient_key.pem");