Linux Mint 19.3を新規InstallしてPHPを7.4.2にUpdateしました。
root@linuxmint:~# uname -r
5.0.0-32-generic
root@linuxmint:~# php -v
PHP 7.4.2 (cli) (built: Feb 5 2020 16:50:38) ( NTS )
Copyright (c) The PHP Group
Zend Engine v3.4.0, Copyright (c) Zend Technologies
with Zend OPcache v7.4.2, Copyright (c), by Zend Technologies
root@linuxmint:~# curl -V
curl 7.58.0 (x86_64-pc-linux-gnu) libcurl/7.58.0 OpenSSL/1.1.1d zlib/1.2.11 libidn2/2.2.0 libpsl/0.19.1 (+libidn2/2.0.4) nghttp2/1.30.0 librtmp/2.3
Release-Date: 2018-01-24
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtmp rtsp 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
root@linuxmint:~# samba -V
Version 4.7.6-Ubuntu
root@linuxmint:~# cat /etc/os-release
NAME=”Linux Mint”
VERSION=”19.3 (Tricia)”
ID=linuxmint
ID_LIKE=ubuntu
PRETTY_NAME=”Linux Mint 19.3″
VERSION_ID=”19.3″
HOME_URL=“https://www.linuxmint.com/”
SUPPORT_URL=“https://forums.ubuntu.com/”
BUG_REPORT_URL=“http://linuxmint-troubleshooting-guide.readthedocs.io/en/latest/”
PRIVACY_POLICY_URL=“https://www.linuxmint.com/”
VERSION_CODENAME=tricia
UBUNTU_CODENAME=bionic
root@linuxmint:~#