php下curl ssl常用问题

1. 查看curl版本

在phpinfo中，可以查看

 

curl

cURL support	enabled
cURL Information	7.35.0
Age	3
Features
AsynchDNS	Yes
Debug	No
GSS-Negotiate	Yes
IDN	No
IPv6	Yes
Largefile	Yes
NTLM	Yes
SPNEGO	Yes
SSL	Yes
SSPI	Yes
krb4	No
libz	Yes
CharConv	No
Protocols	dict, file, ftp, ftps, gopher, http, https, imap, imaps, ldap, pop3, pop3s, rtsp, scp, sftp, smtp, smtps, telnet, tftp
Host	i386-pc-win32
SSL Version	OpenSSL/0.9.8{
ZLib Version	1.2.7
libSSH Version	libssh2/1.4.2

 

1. ssl version对应的数字

CURL_SSLVERSION_DEFAULT (0)
CURL_SSLVERSION_TLSv1 (1)
CURL_SSLVERSION_SSLv2 (2)
CURL_SSLVERSION_SSLv3 (3)
CURL_SSLVERSION_TLSv1_0 (4)
CURL_SSLVERSION_TLSv1_1 (5)
CURL_SSLVERSION_TLSv1_2 (6)

 

2. 检测ssl兼容性的网站

https://www.ssllabs.com/ssltest/