[php-src] Issue #7962: What is total_time_us in curl_getinfo ?

Issue: https://github.com/php/php-src/issues/7962 Author: henri9813 ### Description The following code works on: ``` root@32bf1ba2b92c:/app# php --version PHP 8.0.8 (cli) (built: Jul 22 2021 02:36:54) ( NTS ) Copyright (c) The PHP Group Zend Engine v4.0.8, Copyright (c) Zend Technologies with Zend OPcache v8.0.8, Copyright (c), by Zend Technologies root@32bf1ba2b92c:/app# curl curl curl-config root@32bf1ba2b92c:/app# curl --version curl 7.64.0 (x86_64-pc-linux-gnu) libcurl/7.64.0 OpenSSL/1.1.1d zlib/1.2.11 libidn2/2.0.5 libpsl/0.20.2 (+libidn2/2.0.5) libssh2/1.8.0 nghttp2/1.36.0 librtmp/2.3 Release-Date: 2019-02-06 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp scp sftp smb smbs smtp smtps telnet tftp Features: AsynchDNS IDN IPv6 Largefile GSS-API Kerberos SPNEGO NTLM NTLM_WB SSL libz TLS-SRP HTTP2 UnixSockets HTTPS-proxy PSL ``` ```php <?php $url = "https://google.fr"; $ch = curl_init($url); curl_setopt($ch, CURLOPT_RETURNTRANSFER,1); curl_setopt($ch, CURLOPT_TIMEOUT, 120); $response = curl_getinfo($ch); echo $response["total_time_us"] ``` Resulted in this output: ``` the time in us ``` On another machine which has: ``` server :~/htdocs$ php -v PHP 8.0.14 (cli) (built: Dec 16 2021 03:01:07) ( NTS gcc x86_64 ) Copyright (c) The PHP Group Zend Engine v4.0.14, Copyright (c) Zend Technologies with Zend OPcache v8.0.14, Copyright (c), by Zend Technologies server :~/htdocs$ curl --version curl 7.29.0 (x86_64-redhat-linux-gnu) libcurl/7.29.0 NSS/3.53.1 zlib/1.2.7 libidn/1.28 libssh2/1.8.0 Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smtp smtps telnet tftp Features: AsynchDNS GSS-Negotiate IDN IPv6 Largefile NTLM NTLM_WB SSL libz unix-sockets ``` i got: ``` Warning: Undefined array key "total_time_us" ``` Why ? On the php.net documentation ,there is nothing about this total_time_us key. ### PHP Version PHP 8.0.14 ### Operating System Centos 7