首先检查我的CentOS6是否预装apache

[root@foam /]# rpm -qa | grep httpd
httpd-tools-2.2.15-29.el6.centos.x86_64
httpd-2.2.15-29.el6.centos.x86_64

果然是安装了的，那么先卸载它。
[root@foam /]# rpm -e httpd
warning: /etc/httpd/conf/httpd.conf saved as /etc/httpd/conf/httpd.conf.rpmsave

出来个警告，但是不影响卸载。一、安装Apache1. yum install httpd
2.
[root@foam init.d]# /etc/init.d/httpd start
Starting httpd: httpd: Could not reliably determine the server's fully qualified domain name, using 23.245.26.38 for ServerName
[ OK ]
没找到domain name，使用ip地址做为server name。
设置Domain
[root@foam init.d]# cd /etc/httpd/conf
[root@foam conf]# vim httpd.conf
找到ServerName。将前面的#去掉
ServerName zoufeng.com:80
：wq 保存
[root@foam conf]# chkconfig httpd on #设为开机启动
[root@foam conf]# /etc/init.d/httpd restart #重启Apache
Stopping httpd: [ OK ]
Starting httpd: [ OK ]

ps：安装并启动apache后，浏览器输入IP，可以访问了。二、安装Mysql1.安装
[root@foam conf]# yum install mysql mysql-server
btw:下载速率有8.0M/s
[root@foam ~]# /etc/init.d/mysqld start #启动
Initializing MySQL database: Installing MySQL system tables…
OK
Filling help tables…
OK

[root@foam ~]# chkconfig mysqld on #设置为开机启动

[root@foam ~]# cp /usr/share/mysql/my-medium.cnf /etc/my.cnf
cp: overwrite `/etc/my.cnf'? #可以覆盖它

2.设置密码
[root@foam /]# mysql_secure_installation
提示需要输入密码
Enter current password for root (enter for none): （默认是空，直接enter即可）
Set root password? [Y/n]
接下来输入两次新密码即可
提示是否把匿名用户删除
Remove anonymous users? [Y/n] y
… Success!
提示是否不允许root远程登录（安全起见，不允许）
Disallow root login remotely? [Y/n] y
… Success!
后面还有两个询问，默认Y就可以。
重启Mysql
[root@foam ~]# /etc/init.d/mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]三、安装PHP51.安装
[root@foam ~]# yum install php
btw：这次是8.4MB/s
2.安装php组件
[root@foam ~]# yum install php-mysql php-gd libjpeg* php-imap php-ldap php-odbc php-pear php-xml php-xmlrpc php-mbstring php-mcrypt php-bcmath php-mhash libmcrypt
3.重启mysql和apache
[root@foam ~]# /etc/init.d/mysqld restart
Stopping mysqld: [ OK ]
Starting mysqld: [ OK ]

[root@foam ~]# /etc/init.d/httpd restart
Stopping httpd: [ OK ]
Starting httpd: [ OK ]

最后在/var/www/html/下新建index.php。
echo phpinfo();
浏览器输入ip地址，看到了熟悉的php参数页面。配置成功！！

==============至此LAMP搭建完成==================
如果希望调试PHP，希望显示错误信息，需要到 /etc/php.ini 修改