# 安装依赖
[root@shmily ~]# yum -y install libxml2 libxml2-devel openssl openssl-devel curl-devel libjpeg-devel libpng-devel freetype-devel libmcrypt-devel libzip-devel pcre-devel
# 进入/usr/local目录并下载php安装包
[root@shmily ~]# cd /usr/local
[root@shmily local]# wget http://cn2.php.net/distributions/php-7.3.3.tar.gz
# 解压并进入php目录
[root@shmily local]# tar -zxzf php-7.3.3.tar.gz
[root@shmily local]# cd php-7.3.3
# 配置
[root@shmily php-7.3.3]# ./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --with-config-file-scan-dir=/usr/local/php/etc/php.d --with-mcrypt=/usr/include --enable-mysqlnd --with-mysqli --with-pdo-mysql --enable-fpm --with-fpm-user=nginx --with-fpm-group=nginx --with-gd --with-iconv --with-zlib --enable-xml --enable-shmop --enable-sysvsem
# 此处运行报错：configure: error: no acceptable C compiler found in $PATH（执行完成后重新运行上一步命令）
[root@shmily php-7.3.3]# yum install gcc
# 编译并安装
[root@shmily php-7.3.3]# make && make install
# 复制配置文件并修改文件名
[root@shmily php-7.3.3]# cp php.ini-production /usr/local/php/bin/php.ini
[root@shmily php-7.3.3]# cd /usr/loacl/php/etc/
[root@shmily etc]# cp php-fpm.conf.default php-fpm.conf
# 创建软连接并启动
[root@shmily etc]# ln -s /usr/local/php/sbin/php-fpm
[root@shmily ~]# ./php-fpm
# 此处运行报错：No pool defined（执行完成后重新启动）
[root@shmily ~]# cd /usr/local/php/etc/php-fpm.d
[root@shmily php-fpm.d]# cp www.conf.default www.conf
# 报错：ERROR: [pool www] cannot get uid for user 'nginx'
#       ERROR: FPM initialization failed
[root@shmily php-fpm.d]# vim /usr/local/php/etc/php-fpm.d/www.conf
# 修改：
user = 当前用户
group = 当前用户组
# 创建index.php
[root@shmily php-fpm.d]# echo "<?php echo phpinfo(); ?>" > /usr/local/nginx/html/index.php
# 浏览器访问xx.xx.xx.xx/index.php（需在安装nginx后的环境下运行）