centos7 yum安装php的方法：首先在CentOS7系统上安装和启用EPEL和Remi存储库；然后安装“yum-utils”；接着使用“yum -y install php”命令安装PHP以及所有必需的模块；最后启动“fpm”即可。
在CentOS的7官方软件仓库有PHP 5.4已经走到了生命的结束，由开发商不再积极维护。
要了解最新功能和安全更新，您需要在CentOS 7系统上使用更新的（可能是最新的）PHP版本。
在CentOS 7上安装PHP 7
立即学习“PHP免费学习笔记（深入）”；
安装必要
yum -y install gcc gcc-c++
1.要安装PHP 7，您必须使用以下命令在CentOS 7系统上安装和启用EPEL和Remi存储库。
#yum install https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm #yum install http://rpms.remirepo.net/enterprise/remi-release-7.rpm
2.接下来，您需要安装yum-utils，这是一组用于管理yum存储库和包的有用程序。它有基本上扩展yum默认功能的工具。
它可用于管理（启用或禁用）yum存储库以及包，无需任何手动配置等等。
#yum -y install yum-utils
3. yum-utils提供的程序之一是yum-config-manager，您可以使用它来启用Remi存储库作为安装不同PHP版本的默认存储库，如图所示。
#yum-config-manager --enable remi-php71 [ 安装PHP 7.1 ] #yum-config-manager --enable remi-php72 [ 安装PHP 7.2 ] #yum-config-manager --enable remi-php73 [ 安装PHP 7.3 ]
4.现在使用以下命令安装PHP 7以及所有必需的模块。
#yum -y install php php-mcrypt php-devel php-cli php-gd php-pear php-curl php-fpm php-mysql php-ldap php-zip php-fileinfo
5.查看php版本
[root@VM_159_140_centos lnmp]# php -v PHP 7.1.28 (cli) (built: Apr 2 2019 17:49:56) ( NTS ) Copyright (c) 1997-2018 The PHP Group Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
6.启动php-fpm
systemctl start php-fpm
开启启动
systemctl enable php-fpm.service
查看php.ini文件位置
[root@VM_159_140_centos ~]# php -ini phpinfo() PHP Version => 7.1.28 System => Linux VM_159_140_centos 3.10.0-514.26.2.el7.x86_64 #1 SMP Tue Jul 4 15:04:05 UTC 2017 x86_64 Build Date => Apr 2 2019 17:49:32 Server API => Command Line Interface Virtual Directory Support => disabled Configuration File (php.ini) Path => /etc Loaded Configuration File => /etc/php.ini Scan this dir for additional .ini files => /etc/php.d Additional .ini files parsed => /etc/php.d/20-bz2.ini, /etc/php.d/20-calendar.ini, /etc/php.d/20-ctype.ini, /etc/php.d/20-curl.ini, /etc/php.d/20-dom.ini, /etc/php.d/20-exif.ini, /etc/php.d/20-fileinfo.ini, /etc/php.d/20-ftp.ini, /etc/php.d/20-gd.ini, /etc/php.d/20-gettext.ini, /etc/php.d/20-iconv.ini, /etc/php.d/20-json.ini, /etc/php.d/20-ldap.ini, /etc/php.d/20-mcrypt.ini, /etc/php.d/20-mysqlnd.ini, /etc/php.d/20-pdo.ini, /etc/php.d/20-phar.ini, /etc/php.d/20-posix.ini, /etc/php.d/20-redis.ini, /etc/php.d/20-shmop.ini, /etc/php.d/20-simplexml.ini, /etc/php.d/20-sockets.ini, /etc/php.d/20-sqlite3.ini, /etc/php.d/20-sysvmsg.ini, /etc/php.d/20-sysvsem.ini, /etc/php.d/20-sysvshm.ini, /etc/php.d/20-tokenizer.ini, /etc/php.d/20-xml.ini, /etc/php.d/20-xmlwriter.ini, /etc/php.d/20-xsl.ini, /etc/php.d/30-mysqli.ini, /etc/php.d/30-pdo_mysql.ini, /etc/php.d/30-pdo_sqlite.ini, /etc/php.d/30-wddx.ini, /etc/php.d/30-xmlreader.ini, /etc/php.d/40-zip.ini, /etc/php.d/50-swoole.ini
pecl安装扩展准备
[root@VM_159_140_centos default]# yum -y install php-pear [root@VM_159_140_centos default]# pecl Commands: build Build an Extension From C Source bundle Unpacks a Pecl Package channel-add Add a Channel channel-alias Specify an alias to a channel name channel-delete Remove a Channel From the List
...................................................
pecl安装redis
[root@VM_159_140_centos www]# pecl install redis You should add "extension=redis.so" to php.ini [root@VM_159_140_centos www]# echo "extension=redis.so;" >> /etc/php.d/20-redis.ini
错误
checking for igbinary includes... configure: error: Cannot find igbinary.h [root@VM_159_140_centos www]# pecl install igbinary You should add "extension=igbinary.so" to php.ini [root@VM_159_140_centos www]# echo "extension=igbinary.so;" >> /etc/php.d/20-redis.ini
