This article assume that Nginx is installed in your server and its up and running.Lest install NginX

Update the repository

yum update -y

Install the EPEL repository

yum install epel-release -y

Install Dependencies

yum install -y git gcc gcc-c++ libxml2-devel pkgconfig openssl-devel bzip2-devel curl-devel libpng-devel libjpeg-devel libXpm-devel freetype-devel gmp-devel libmcrypt-devel mariadb-devel aspell-devel recode-devel autoconf bison re2c libicu-devel libxslt-devel libxslt

Get The PHP Source

curl -O -L https://github.com/php/php-src/archive/php-7.1.18.tar.gz
tar -xvf php-7.1.18.tar.gz
cd php-src-php-7.1.18/

Compile Source Code 

./buildconf --force

./configure --prefix=/etc/php --with-config-file-path=/etc/php/etc --with-config-file-scan-dir=/etc/php/etc/conf.d --enable-bcmath --with-bz2 --with-curl --enable-filter --enable-fpm --with-gd --enable-gd-native-ttf --with-freetype-dir --with-jpeg-dir --with-png-dir --enable-intl --enable-mbstring --with-mcrypt --enable-mysqlnd --with-mysql-sock=/var/lib/mysql/mysql.sock --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-pdo-sqlite --disable-phpdbg --disable-phpdbg-webhelper --enable-opcache --with-openssl --enable-simplexml --with-sqlite3 --enable-xmlreader --enable-xmlwriter --enable-zip --with-zlib --enable-soap --with-xsl

make
make install

Add PHP to $PATH

echo 'pathmunge /etc/php/bin' > /etc/profile.d/php.sh

Copy php.ini

cp php.ini-development /etc/php/lib/php.ini

Add module opcache

vi /etc/php/etc/conf.d/modules.ini

and add 'zend_extension=opcache.so'

PHP FPM SET UP

mkdir /etc/php/etc/conf.d

cp sapi/fpm/www.conf /etc/php/etc/php-fpm.d/www.conf

cp sapi/fpm/php-fpm.conf /etc/php/etc/php-fpm.conf

Update PHP FPM configuration

vi /etc/php/etc/php-fpm.d/www.conf

user = nobody
group = nobody

listen.owner = nginx
listen.group = nginx

listen = /var/run/php-fpm/php-fpm.sock

Create a symlink for php-fpm to the standard path

ln -s /etc/php/sbin/php-fpm /usr/sbin/php-fpm

Create a systemctl file add the following:

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

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

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

[Install]
WantedBy=multi-user.target

Create a run directory for php-fpm:

mkdir /run/php-fpm

Start php-fpm and Restart NginX

systemctl start php-fpm

service nginx restart

Create index.php

mv /etc/nginx/html/index.html /etc/nginx/html/index.php

Update nginx.con file with the followinf content

root /etc/nginx/html;
index index.php index.html index.htm;

location ~ \.php$ {
try_files $uri =404;
fastcgi_pass unix:/var/run/php-fpm/php-fpm.sock;
fastcgi_index index.php;
fastcgi_param SCRIPT_FILENAME $document_root$fastcgi_script_name;
include fastcgi_params;
}

Load URL

http://127.0.0.1/