PHP development environment construction and database addition, deletion, modification and query

Experimental environment ：

centos7（192.168.98.66）

The experimental steps ：

1、LAMP Environment building

Turn off the firewall and disable boot

[[email protected] ~]# systemctl disable --now firewalld

notes ： disable # It is forbidden to start the machine automatically .

--now # Immediate effect , Adding this parameter will immediately stop

firewalld Firewall service . Equivalent to the following two commands ：

[[email protected] ~]# systemctl disable firewalld

[[email protected] ~]# systemctl stop firewalld

Temporarily Closed selinux, Prevent the permission configuration in our environment from being affected later

[[email protected] ~]# setenforce 0

Permanent ban selinux

[[email protected] ~]# sed -i 's/SELINUX=enforcing/SELINUX=disabled/g' /etc/selinux/config