php curl 证书问题

如果你的 PHP 环境证书有问题，可能会遇到报错，类似于 cURL error 60: See http://curl.haxx.se/libcurl/c/libcurl-errors.html，请尝试按如下步骤解决：

1. 到 https://curl.haxx.se/ca/cacert.pem 下载证书文件 cacert.pem，将其保存到合适的路径下。
2. 编辑 php.ini 文件，删除 curl.cainfo 配置项前的分号注释符（;），值设置为保存的证书文件 cacert.pem 的绝对路径。
3. 重启依赖 PHP 的服务。

linux示例：

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo = /etc/pki/tls/certs/ca-bundle.crt

[openssl]
; The location of a Certificate Authority (CA) file on the local filesystem
; to use when verifying the identity of SSL/TLS peers. Most users should
; not specify a value for this directive as PHP will attempt to use the
; OS-managed cert stores in its absence. If specified, this value may still
; be overridden on a per-stream basis via the "cafile" SSL stream context
; option.

windows示例：

[curl]
; A default value for the CURLOPT_CAINFO option. This is required to be an
; absolute path.
curl.cainfo = "E:\cacert.pem"

[openssl]
; The location of a Certificate Authority (CA) file on the local filesystem
; to use when verifying the identity of SSL/TLS peers. Most users should
; not specify a value for this directive as PHP will attempt to use the
; OS-managed cert stores in its absence. If specified, this value may still
; be overridden on a per-stream basis via the "cafile" SSL stream context
; option.
;openssl.cafile=