Self-built CA Based on OpenSSL and SSL certificate issuance
For details about SSL/TLS, see the SSL/TLS principles.For more information about Certificate Authority (CA) and digital certificate, see OpenSSL and SSL digital certificate
CURL.1 manual page
Name
Curl-transfer a URL
Summary
curl[options] [URL ...]
Describe
CURL is a tool that transmits data to or from the server, which supports HTTP, HTTPS,
Protocols such as FTP, FTPS, SCP, SFTP, TFTP, DICT, TELNET, LDAP, or
Curl: (+) SSL certificate problem:unable to get local issuer certificate error, Curlissuer
This issue occurs because the trusted server HTTPS authentication is not configured. By default, curl is set to not trust any CAs, which means that it does
CURL is a tool that uses URL syntax to transmit files and data. it supports many protocols, such as HTTP, FTP, and TELNET. the best thing is that PHP also supports the cURL Library. PHP cURL library can be simple
1. what is CURL?CURL is a tool that
One, what is curl?CURL is a tool that uses URL syntax to transfer files and data, and supports many protocols, such as HTTP, FTP, Telnet, and so on. Best of all, PHP also supports the CURL library. Using the PHP Curl Library, you can easily and
Currently, php provides the most comprehensive CURL description in Chinese. In PHP, the CURL Function Library (ClientURLLibraryFunction) curl_close-closes a curl session curl_copy_handle-copies all content of a curl connection resource and the CURL
Curl: (60) SSL certificate problem: unable to get local issuer certificate error, curlissuer
This problem occurs because HTTPS authentication is not configured for a trusted server. By default, cURL is set to not trust any CAs, that is, it does not
PHP uses Socket to obtain the website's SSL Certificate and public key, phpsocketssl Certificate
You cannot obtain the certificate information from the php curl request webpage. In this case, you need to use ssl socket to obtain the certificate
Curl Libraries in PHP (Client URL library function)
curl_close-closing a Curl session
curl_copy_handle-Copy all the contents and parameters of a Curl connection resource
curl_errno-returns a numeric number that contains the current session error
Currently, the most comprehensive CURL Chinese explanation shows that PHP learning should be well mastered. There are many parameters. Most of them are useful. If you have mastered it and regular expressions, you must be a collection expert.
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