PHP 版本 7.4.0 已在穩定階段發布，供開發人員和用戶進行測試。不建議在正式版中運行此程序，直到向公眾提供穩定版本的 PHP 7.4。預計正式發布日期為 2019 年 11 月 28 日。
PHP 7.4 帶有大量新功能。這個版本是 RPM 在remi-php74 儲存庫的 Fedora ≥ 29 和企業級 Linux ≥ 7 ( RHEL，CentOS 的 ) 和軟件集合在 remi-safe 存儲庫 ( 或 remi 為 Fedora )。
☛ 添加 EPEL 和 REMI 存儲庫
[root@localhost ~]# sudo yum -y install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm [root@localhost ~]# sudo yum -y install https://rpms.remirepo.net/enterprise/remi-release-7.rpm
☛ 在 CentOS 7上安裝 PHP 7.4
現在，我們可以啟用 PHP 7.4 Remi 存儲庫並在 CentOS 7 上安裝 PHP 7.4。
[root@localhost ~]# sudo yum -y install yum-utils [root@localhost ~]# sudo yum-config-manager --enable remi-php74
在 CentOS 7 上安裝 PHP 7.4。
[root@localhost ~]# sudo yum update [root@localhost ~]# sudo yum install php php-cli
接受安裝提示。
Dependencies Resolved =================================================================================================================================================== Package Arch Version Repository Size =================================================================================================================================================== Installing: php x86_64 7.4.0-1.el7.remi remi-php74 3.4 M php-cli x86_64 7.4.0-1.el7.remi remi-php74 5.1 M Installing for dependencies: apr x86_64 1.4.8-5.el7 base 103 k apr-util x86_64 1.5.2-6.el7 base 92 k centos-logos noarch 70.0.6-3.el7.centos base 21 M httpd x86_64 2.4.6-90.el7.centos base 2.7 M httpd-tools x86_64 2.4.6-90.el7.centos base 91 k mailcap noarch 2.1.41-2.el7 base 31 k php-common x86_64 7.4.0-1.el7.remi remi-php74 1.1 M php-json x86_64 7.4.0-1.el7.remi remi-php74 68 k Transaction Summary =================================================================================================================================================== Install 2 Packages (+8 Dependent packages) Total download size: 34 M Installed size: 73 M Is this ok [y/d/N]: y Downloading packages: (1/10): httpd-tools-2.4.6-90.el7.centos.x86_64.rpm | 91 kB 00:00:00 (2/10): apr-1.4.8-5.el7.x86_64.rpm | 103 kB 00:00:01 (3/10): mailcap-2.1.41-2.el7.noarch.rpm | 31 kB 00:00:00 (4/10): apr-util-1.5.2-6.el7.x86_64.rpm | 92 kB 00:00:01 (5/10): httpd-2.4.6-90.el7.centos.x86_64.rpm | 2.7 MB 00:09 warning: /var/cache/yum/x86_64/7/remi-php74/packages/php-common-7.4.0-1.el7.remi.x86_64.rpm: Header V4 DSA/SHA1 Signature, key ID 00f97f56: NOKEY Public key for php-common-7.4.0-1.el7.remi.x86_64.rpm is not installed (6/10): php-common-7.4.0-1.el7.remi.x86_64.rpm | 1.1 MB 00:09 (7/10): php-json-7.4.0-1.el7.remi.x86_64.rpm | 68 kB 00:01 (8/10): php-7.4.0-1.el7.remi.x86_64.rpm | 3.4 MB 00:13 (9/10): php-cli-7.4.0-1.el7.remi.x86_64.rpm | 5.1 MB 00:13 (10/10): centos-logos-70.0.6-3.el7.centos.noarch.rp | 21 MB 00:31 ------------------------------------------------------------------------- Total 1.1 MB/s | 34 MB 00:31 Retrieving key from file:///etc/pki/rpm-gpg/RPM-GPG-KEY-remi Importing GPG key 0x00F97F56: Userid : "Remi Collet <RPMS@FamilleCollet.com>" Fingerprint: 1ee0 4cce 88a4 ae4a a29a 5df5 004e 6f47 00f9 7f56 Package : remi-release-7.7-1.el7.remi.noarch (installed) From : /etc/pki/rpm-gpg/RPM-GPG-KEY-remi Is this ok [y/N]: y
使用下一條命令安裝其他軟件包：
[root@localhost ~]# sudo yum install php-xxx
例：
[root@localhost ~]# sudo yum install php php-cli php-fpm php-mysqlnd php-zip php-devel php-gd php-mcrypt php-mbstring php-curl php-xml php-pear php-bcmath php-json
當前的 PHP 版本應該是 7.4。
[root@localhost ~]# php -v PHP 7.4.0 (cli) (built: Nov 26 2019 20:13:36) ( NTS ) Copyright (c) The PHP Group Zend Engine v3.4.0, Copyright (c) Zend Technologies
要查看已啟用的模塊，請執行：
[root@localhost ~]# php --modules
