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curl: (60) SSL certificate problem: unable to get local issuer certificate 错误，curlissuer
curl: (60) SSL certificate problem: unable to get local issuer certificate 错误，curlissuer
curl: (60) SSL certificate problem: unable to get local issuer certificate 错误，curlissuer
此问题的出现是由于没有配置信任的服务器HTTPS验证。默认，cURL被设为不信任任何CAs，就是说，它不信任任何服务器验证。因此，这就是浏览器无法通过HTTPs访问你服务器的原因。当此问题出现时，网络程序员最好的办法是充分指定一组默认的受信任CAs，前提是你已经从这些CAs中购买过证书。
如果你的内容不敏感，一个快捷的方法是使用curl_exec()之前跳过ssl检查项：
curl_setopt(<span>$ch</span>, CURLOPT_SSL_VERIFYPEER, <span>false</span>);
错误信息：无法验证安全证书 unable go get local issuer certificate。
英文错误信息的翻译过来是“不能获得证书颁发者”，这是因为你电脑中没有安装此证书的CA证书。
你需要做的是：获得证书的CA证书，并将之安装到你的电脑中。
好好看一下wget 的帮助，加-no-check-certificate 选项，试试。
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