转载：https://blog.csdn.net/weixin_37998647/article/deta
安装依赖包：
#yum install gcc bison bison-devel zlib-devel libmcrypt-devel mcrypt mhash-devel openssl-devel libxml2-devel libcurl-devel bzip2-devel readline-devel libedit-devel sqlite-devel libpng-devel libjpeg-devel freetype freetype-devel
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创建www用户：
#groupadd www
#useradd -g www -s /sbin/nologin -M www
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一、安装Nginx1.12.1：
centos6.8的镜像带的Nginx版本是1.12.1
#yum install -y nginx
#/etc/init.d/nginx start
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二、安装mysql5.7.20:
#wget https://dev.mysql.com/get/mysql57-community-release-el6-9.noarch.rpm
#rpm -Uvh mysql57-community-release-el6-9.noarch.rpm
#yum install mysql-community-server
#service mysqld start
#grep 'temporary password' /var/log/mysqld.log | awk '{print $NF}'
#mysql -uroot -p
mysql>set global validate_password_policy=0;
mysql>set global validate_password_length=6;
mysql>SET PASSWORD FOR 'root'@'localhost' =PASSWORD('**');
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三、安装PHP7.2.0
3.1源码编译安装
#wget rm -php-7.2.0.tar.xz
#tar xvJf php-7.2.0.tar -C /usr/local/
#cd /usr/local/php-7.2.0
#./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --with-mysqli --with-pdo-mysql --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --enable-mbregex --enable-mbstring --enable-ftp --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --without-pear --with-gettext --disable-fileinfo --enable-maintainer-zts --with-libdir=lib64

make

make install

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上面configure步骤，可能会因为缺少依赖包而报错，我这台机器安装过其他一些其他的包，不同的机器情况可能不一样，在编译的时候根据报错信息
用yum search 查找依赖包并安装，编译完成之后是没有error的！！！
make install 完成后也是没有error的才可以进行后面的步骤。
3.2 配置PHP
#cp /usr/local/php-7.2.0/php.ini-development /usr/local/php/etc/php.ini
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#cp /usr/local/php/etc/php-fpm.conf.default /usr/local/php/etc/php-fpm.conf
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#cp /usr/local/php-7.2.0/sapi/fpm/init.d.php-fpm /etc/init.d/php-fpm
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#chmod +x /etc/init.d/php-fpm
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#cp /usr/local/php/etc/php-fpm.d/www.conf.default/usr/local/php/etc/php-fpm.d/www.conf
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3.3启动php-fpm

/etc/init.d/php-fpm start

Starting php-fpm done
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3.4添加 PHP 命令到环境变量
vim ~/.bash_profile
cat ~/.bash_profile

.bash_profile

Get the aliases and functions

if [ -f ~/.bashrc ]; then
. ~/.bashrc
fi

User specific environment and startup programs

PATH=$PATH:$HOME/bin:/usr/local/php/bin

export PATH
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使之生效：
#. ~/.bash_profile
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3.5查看PHP版本：

php -v

PHP 7.2.0 (cli) (built: Dec 17 2017 19:58:31) ( ZTS )
Copyright (c) 1997-2017 The PHP Group
Zend Engine v3.2.0, Copyright (c) 1998-2017 Zend Technologies
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3.6测试结果：
vim /usr/share/nginx/html/a.php
phpinfo();
?>
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vim /etc/nginx/conf.d/default.conf
cat /etc/nginx/conf.d/default.conf
server {
listen 80;
server_name localhost;

#charset koi8-r;
#access_log  /var/log/nginx/host.access.log  main;

location / {
    root   /usr/share/nginx/html;
    index index.php index.html index.htm;
}
location ~ \.php$ {
    root           html;
    fastcgi_pass   127.0.0.1:9000;
    fastcgi_index  index.php;
    fastcgi_param  SCRIPT_FILENAME  /usr/share/nginx/html$fastcgi_script_name;
    include        fastcgi_params;
}

#error_page  404              /404.html;

# redirect server error pages to the static page /50x.html
#
error_page   500 502 503 504  /50x.html;
location = /50x.html {
    root   /usr/share/nginx/html;
}

# proxy the PHP scripts to Apache listening on 127.0.0.1:80
#
#location ~ \.php$ {
#    proxy_pass   http://127.0.0.1;
#}

# pass the PHP scripts to FastCGI server listening on 127.0.0.1:9000
#
#location ~ \.php$ {
#    root           html;
#    fastcgi_pass   127.0.0.1:9000;
#    fastcgi_index  index.php;
#    fastcgi_param  SCRIPT_FILENAME  /scripts$fastcgi_script_name;
#    include        fastcgi_params;
#}

# deny access to .htaccess files, if Apache's document root
# concurs with nginx's one
#
#location ~ /\.ht {
#    deny  all;
#}

}
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Nginx配置文件修改的地方（在server里面添加 index.php格式的文件。增加一个location模块）
重新加载Nginx，重启php-fpm

/etc/init.d/nginx restart

Stopping nginx: [ OK ]
Starting nginx: [ OK ]

/etc/init.d/php-fpm restart

Gracefully shutting down php-fpm . done
Starting php-fpm done
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测试：

curl 192.168.1.185/a.php

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或者直接到网页上访问。

至此，lnmp环境搭建成功

笔者在参考文档搭建环境时遇到诸多问题，见如下连接解决：
安装依赖包时报错：https://www.cnblogs.com/linux-super-meng/p/4150987.html
我的php是安装的7.2.4版本，从官网下载的安装包：http://php.net/get/php-7.2.4.tar.gz/from/a/mirror
安装mysql时报错： https://ask.csdn.net/questions/674613
安装完mysql时无法登录mysql：https://www.cnblogs.com/gumuzi/p/5711495.html
centos7关闭防火墙： https://www.linuxidc.com/Linux/2015-05/117473.htm
配置nginx支持php：https://www.cnblogs.com/jecyhw/p/5504855.html