执行下面的命令删除PHP

yum remove PHP-common

然后像安装那样问你是否继续的，输入yes即可

安装apache

关闭SELinux
编辑器打开 etc/selinux/config 文件，找到 SELINUX=enforcing 字段，将其改成 SELINUX=disabled ，并重启设备。
yum -y install httpd mod_ssl
配置防火墙
firewall-cmd --permanent --add-port=80/tcp
firewall-cmd --permanent --add-port=443/tcp
firewall-cmd --reload
 
开机启动
systemctl start httpd
systemctl enable httpd
终端输入如下指令检查httpd的运行状态
sudo systemctl status httpd

安装PHP7

添加源
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
安装
yum install PHP70w

安装MysqL5.7

1.安装wget
    yum -y install wget
2.安装源
    wget http://dev.MysqL.com/get/MysqL57-community-release-el7-8.noarch.rpm
    rpm -ivh MysqL57-community-release-el7-8.noarch.rpm
3.安装MysqL
    yum install MysqL-server
4.启动MysqL服务
    systemctl start MysqLd
5.查看MysqL的启动状态
    systemctl status MysqLd
6.开机启动
    systemctl enable MysqLd
    systemctl daemon-reload
7.修改root本地登录密码
    查找MysqL生成的随机密码
    grep 'temporary password' /var/log/MysqLd.log
    MysqL -uroot -p
    修改密码，注意：MysqL5.7默认安装了密码安全检查插件（validate_password），默认密码检查策略要求密码必须包含：大小写字母、数字和特殊符号，并且长度不能少于8位。否则会提示ERROR 1819 (HY000): Your password does not satisfy the current policy requirements错误
    ALTER USER 'root'@'localhost' IDENTIFIED BY 'MyNewPass4!'; 
 
8.配置默认编码为utf8
    修改/etc/my.cnf配置文件，在[MysqLd]下添加编码配置
    [MysqLd]
    character_set_server=utf8
    init_connect='SET NAMES utf8'
9.配置MysqL远程连接
    MysqL -uroot -p
    use MysqL;
    Grant all on *.* to 'root'@'%' identified by 'root用户的密码' with grant option;
flush privileges;
然后用以下命令查看哪些用户和host可以访问，%代表任意ip地址
select user,host from user;
防火墙添加3306端口
firewall-cmd --zone=public --add-port=3306/tcp --permanent
firewall-cmd --reload
 
10.MysqL忘记密码
 
1.修改MysqL的配置文件（默认为/etc/my.cnf）,在[MysqLd]下添加一行skip-grant-tables
2.service MysqLd restart后，即可直接用MysqL进入
3.MysqL> update MysqL.user set authentication_string=password('123qwe') where user='root' and Host = 'localhost';
   MysqL> flush privileges;
   MysqL> quit;
 将/etc/my.cnf文件还原，重新启动MysqL:service MysqL restart,这个时候可以使用MysqL -u root -p'123qwe'进入了
 
 MysqL>SET PASSWORD = PASSWORD('newpasswd'); 设置新密码