安装步骤
0、准备安装包
在PHP官网下载页面选择一个最新的稳定版，进入镜像地址列表页，选择服务器所在地域的镜像下载

cd /home
wget http://am1.php.net/get/php-7.2.8.tar.gz/from/this/mirror -O ./php-7.2.8.tar.gz
# 如果在境内建议使用wget http://cn2.php.net/get/php-7.2.8.tar.gz/from/this/mirror -O ./php-7.2.8.tar.gz
tar -zxvf php-7.2.8.tar.gz

1、安装扩展包

yum install epel-release -y

2、更新系统内核

yum update

3、安装依赖组件

yum -y install wget vim pcre pcre-devel openssl openssl-devel libicu-devel gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel ncurses ncurses-devel curl curl-devel krb5-devel libidn libidn-devel openldap openldap-devel nss_ldap jemalloc-devel cmake boost-devel bison automake libevent libevent-devel gd gd-devel libtool* libmcrypt libmcrypt-devel mcrypt mhash libxslt libxslt-devel readline readline-devel gmp gmp-devel libcurl libcurl-devel openjpeg-devel

4、创建用户和组

/usr/sbin/groupadd www
/usr/sbin/useradd www

5、设置变量

cp -frp /usr/lib64/libldap* /usr/lib/

6、生成编译文件

./configure --prefix=/usr/local/php \
--with-config-file-path=/usr/local/php/etc \
--enable-fpm \
--with-fpm-user=www \
--with-fpm-group=www \
--enable-mysqlnd \
--with-mysqli=mysqlnd \
--with-pdo-mysql=mysqlnd \
--enable-mysqlnd-compression-support \
--with-iconv-dir \
--with-freetype-dir \
--with-jpeg-dir \
--with-png-dir \
--with-zlib \
--with-libxml-dir \
--enable-xml \
--disable-rpath \
--enable-bcmath \
--enable-shmop \
--enable-sysvsem \
--enable-inline-optimization \
--with-curl \
--enable-mbregex \
--enable-mbstring \
--enable-intl \
--with-mcrypt \
--with-libmbfl \
--enable-ftp \
--with-gd \
--enable-gd-jis-conv \
--enable-gd-native-ttf \
--with-openssl \
--with-mhash \
--enable-pcntl \
--enable-sockets \
--with-xmlrpc \
--enable-zip \
--enable-soap \
--with-gettext \
--disable-fileinfo \
--enable-opcache \
--with-pear \
--enable-maintainer-zts \
--with-ldap=shared \
--without-gdbm \

7、编译并安装

make -j 4 && make install

# 有报错可以根据提示排查，一般是缺少依赖组件
8、创建配置文件

cd /home/php-7.2.8
cp php.ini-development /usr/local/php/etc/php.ini
cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf
cp /usr/local/php/etc/php-fpm.d/www.conf.default /usr/local/php/etc/php-fpm.d/www.conf

9、创建初始化脚本

cp /home/php-7.2.8/sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
chown +x /etc/init.d/php-fpm

10、php-fpm服务管理

/etc/init.d/php-fpm status
/etc/init.d/php-fpm start
/etc/init.d/php-fpm reload
/etc/init.d/php-fpm restart
/etc/init.d/php-fpm stop

如果/etc/init.d/php-fpm start启动正常，通过ps -ef | grep php-fpm能看到运行中的进程，这表示php-fpm安装成功
11、加入开机自启动
chkconfig –add php-fpm
12、通过service服务来管理
service php-fpm status
service php-fpm start
service php-fpm reload
service php-fpm restart
service php-fpm stop

当然要让Nginx 和 PHP通信，还需要做一个参数配置和优化，参考下一篇文章。

另外针对Centos7.4php-fpm服务可以通过systemd来管理(可以事后在添加)，配置如下：
0、新建php-fpm.service文件

touch /usr/lib/systemd/system/php-fpm.service

1、添加以下内容

[Unit]
Description=The PHP FastCGI Process Manager
After=syslog.target network.target

[Service]
Type=simple
PIDFile=/usr/local/php/var/run/php-fpm.pid
ExecStart=/usr/local/php/sbin/php-fpm --nodaemonize --fpm-config /usr/local/php/etc/php-fpm.conf
ExecReload=/bin/kill -USR2 $MAINPID

[Install]
WantedBy=multi-user.target

3、通过systemd来管理php-fpm服务

systemctl status php-fpm.service
systemctl start php-fpm.service
systemctl reload php-fpm.service
systemctl restart php-fpm.service
systemctl stop php-fpm.service

4、加入开机自启动

systemctl enable php-fpm.service