Fedora release 31 PHPを8.0.0alpha3にUpdateさせてみました。
[root@f31 ~]# uname -r
5.7.9-100.fc31.x86_64
[root@f31 ~]# php -v
PHP 8.0.0alpha3 (cli) (built: Jul 21 2020 08:49:31) ( NTS gcc x86_64 )
Copyright (c) The PHP Group
Zend Engine v4.0.0-dev, Copyright (c) Zend Technologies
with Zend OPcache v8.0.0alpha3, Copyright (c), by Zend Technologies
[root@f31 ~]# curl -V
curl 7.66.0 (x86_64-redhat-linux-gnu) libcurl/7.66.0 OpenSSL/1.1.1g-fips zlib/1.2.11 brotli/1.0.7 libidn2/2.3.0 libpsl/0.21.0 (+libidn2/2.2.0) libssh/0.9.4/openssl/zlib nghttp2/1.41.0
Release-Date: 2019-09-11
Protocols: dict file ftp ftps gopher http https imap imaps ldap ldaps pop3 pop3s rtsp scp sftp smb smbs smtp smtps telnet tftp
Features: AsynchDNS brotli GSS-API HTTP2 HTTPS-proxy IDN IPv6 Kerberos Largefile libz Metalink NTLM NTLM_WB PSL SPNEGO SSL TLS-SRP UnixSockets
[root@f31 ~]# samba -V
Version 4.11.11
[root@f31 ~]# cat /etc/redhat-release
Fedora release 31 (Thirty One)
[root@f31 ~]#