build website platform. LAMP

what is lamp? lamp is linux+apache+mysql+php.They are all open source software and free.

• change your centos 7 yum source to a faster source and upgrade the os.
  for example:
  1 backup local yum source.
  mv /etc/yum.repos.d/CentOS-Base.repo /etc/yum.repos.d/CentOS-Base.repo_bak
  2 get a faster souce
  wget -O /etc/yum.repos.d/CentOS-Base.repo http://mirrors.aliyun.com/repo/Centos-7.repo
  then update cache and os
  yum makecache
yum -y update
• install apache
  yum install httpd
  apache point the default root dir to /var/www/html
  configuration file is in dir /etc/httpd/conf/httpd.conf
• install mysql
  if you want use utf8mb4.the mysql version need higher then 5.5.3
  some emoji code need utf8mb4 format.
  centos replacing mysql with mariadb.
  if you want use mysql.
  1 download mysql yum repository
  wget http://dev.mysql.com/get/mysql-community-release-el7-5.noarch.rpm
  2 add mysql yum repository to system repository list
  yum localinstall mysql-community-release-el7-5.noarch.rpm
  you can check if it runs successed.
  yum repolist enabled | grep "mysql.*-community.*"
  
  
  3 install mysql
  yum install mysql-community-server
  run mysql
  systemctl start mysqld or service mysqld start
  modify mysql root password
  mysqladmin -u root password "xxxxxxxx"
  now mysql install successful.you can try login in it.
  
  
• install php
  wordpress 5.2 need php 7.2 or higher.But centos 7 only has 5.4 version.
  so we need add another yum repository such like mysql.
  rpm -Uvh https://dl.fedoraproject.org/pub/epel/epel-release-latest-7.noarch.rpm
rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm
  then we can install php 7.2 now.
  yum install php72w php72w-cli php72w-common php72w-devel php72w-embedded php72w-fpm php72w-gd php72w-mbstring php72w-mysqlnd php72w-opcache php72w-pdo php72w-xml

• finally we finished installation.
  we can start httpd service and edit a index file to test.
  vi /var/www/html/index.php
  with content
  <?php
echo phpinfo();
?>
  open your browser and open the address http://yourip/
  we can see the page like following:
  
  

if you can’t open the page.maybe it denied by firewall.
run
firewall-cmd --zone=public --add-port=80/tcp --permanent
if you want access mysql from other computer.also need
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --zone=public --add-port=3306/udp --permanent
then
firewall-cmd --reload