使用php -f ./bin/CertificateDownloader.php -- -k XXXXX -m 16527**** -f ./bin/cert/apiclient_key.pem -s XXXXXXXXX -o ./ 下载证书总是提示错误。 *   Trying 59.36.153.147... * TCP_NODELAY set * Expire in 149967 ms for 3 (transfer 0x26e87acba70) * Expire in 200 ms for 4 (transfer 0x26e87acba70) * Connected to api.mch.weixin.qq.com (59.36.153.147) port 443 (#0) * ALPN, offering http/1.1 * SSL certificate problem: unable to get local issuer certificate * Closing connection 0