本文目录一览：
centos 下如何通过yum安装最新的php
remi源，这里的php版本较新，5.4，5.5，5.6都有，还有配套的各种扩展
rpms.famillecollet.com
Centos 6.默认下没有安装php组件，因此我们需要输入命令：yum -y install php 回车如下图。
不用管，程序会自动完成安装及配置。
Zend组件，Centos 6.3 里面是没有的，需要手动下载，及安装教程请点击下面链接：
到此前期的准备工作已完成，下面就要对Apache进行配置
输入命令 pd/conf/httpd.conf //打开Apache配置文件，
找到ServerTokens OS 将“OS”改为“Prod “ 。//显示服务器运行错误信息。与下图一样，那么Apache你就配置成功了，如果不一样请仔细对比上面的教程是不是那个步骤少了#及字母拼写错了。
到此php运行环境便配置成功啦。
阿里云上的centos 7.2怎么yum安装php 5.6
因之前通过网易的 centos 镜像，将阿里云的 centos 升级到最新版了，乘自己的项目尚未开始正式开发，遂将所有的相应环境都升级到最高。
查看 centos 版本：
[root@iZ23d ~]# cat /etc/centos-release
CentOS Linux release 7.2.1511 (Core)
1、删除之前的 php 版本：
[root@iZ23d ~]# yum remove php* php-common
Loaded plugins: langpacks
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
No Match for argument: php-5.4.16
No Match for argument: php-5.4.16.tar.gz
No Match for argument: php-7.0.1RC1
No Match for argument: php-7.0.1RC1.tar.gz
No Match for argument: phpMyAdmin-4.4.0.tar.gz
No Match for argument: php-common
No Packages marked for removal
2、rpm 安装 Php7 相应的 yum源：
[root@iZ23d ~]# rpm -Uvh
Retrieving
warning: /var/tmp/rpm-tmp.LhJKKR: Header V4 RSA/SHA1 Signature, key ID 62e74ca5: NOKEY
Preparing... ################################# [100%]
package webtatic-release-7-3.noarch is already installed
3、 直接yum安装php7：
[root@iZ23d ~]# yum install php70w
Loaded plugins: langpacks
Repository base is listed more than once in the configuration
Repository updates is listed more than once in the configuration
Repository extras is listed more than once in the configuration
Repository centosplus is listed more than once in the configuration
Resolving Dependencies
-- Running transaction check
。。。 【省略】
Warning: RPMDB altered outside of yum.
Installing : php70w-common-7.0.0-1.w7.x86_64 1/3
Installing : php70w-cli-7.0.0-1.w7.x86_64 2/3
Installing : php70w-7.0.0-1.w7.x86_64 3/3
Verifying : php70w-7.0.0-1.w7.x86_64 1/3
Verifying : php70w-common-7.0.0-1.w7.x86_64 2/3
Verifying : php70w-cli-7.0.0-1.w7.x86_64 3/3
Installed:
php70w.x86_64 0:7.0.0-1.w7
Dependency Installed:
php70w-cli.x86_64 0:7.0.0-1.w7 php70w-common.x86_64 0:7.0.0-1.w7
Complete!
4、检查 php 版本：
[root@iZ23d ~]# php -v
PHP 7.0.0 (cli) (built: Dec 2 2015 20:42:32) ( NTS )
Copyright (c) 1997-2015 The PHP Group
Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies
[root@iZ23d2e6hoqZ ~]#
以上显示安装成功！
5、重启 Apache，查看 phpinfo :
[root@iZ23d ~]# systemctl restart httpd.service
检查phpinfo:
PHP Version 7.0.0
SystemLinux iZ23d 3.10.0-229.11.1.el7.x86_64 #1 SMP Thu Aug 6 01:06:18 UTC 2015 x86_64
Build DateDec 2 2015 20:43:38
Server APIApache 2.0 Handler
Virtual Directory Supportdisabled
Configuration File (php.ini) Path/etc
Loaded Configuration File/etc/php.ini
Scan this dir for additional .ini files/etc/php.d
Additional .ini files parsed/etc/php.d/bz2.ini, /etc/php.d/calendar.ini, /etc/php.d/ctype.ini, /etc/php.d/curl.ini, /etc/php.d/exif.ini, /etc/php.d/fileinfo.ini, /etc/php.d/, /etc/php.d/gettext.ini, /etc/php.d/gmp.ini, /etc/php.d/iconv.ini, /etc/php.d/json.ini, /etc/php.d/phar.ini, /etc/php.d/shmop.ini, /etc/php.d/simplexml.ini, /etc/php.d/sockets.ini, /etc/php.d/tokenizer.ini, /etc/php.d/xml.ini, /etc/php.d/zip.ini
PHP API20151012
PHP Extension20151012
Zend Extension320151012
Zend Extension BuildAPI320151012,NTS
PHP Extension BuildAPI20151012,NTS
Debug Buildno
Thread Safetydisabled
Zend Signal Handlingdisabled
Zend Memory Managerenabled
Zend Multibyte Supportdisabled
IPv6 Supportenabled
DTrace Supportenabled
Registered PHP Streamshttps, ftps, compress.zlib, php, file, glob, data, http, ftp, compress.bzip2, phar, zip
Registered Stream Socket Transportstcp, udp, unix, udg, ssl, sslv3, sslv2, tls, tlsv1.0, tlsv1.1, tlsv1.2
Registered Stream Filterszlib.*, string.rot13, string.toupper, string.tolower, string.strip_tags, convert.*, consumed, dechunk, bzip2.*, convert.iconv.*
This program makes use of the Zend Scripting Language Engine:
Zend Engine v3.0.0, Copyright (c) 1998-2015 Zend Technologies
Configuration
apache2handler
Apache VersionApache/2.4.6 (CentOS)
Apache API Version20120211
Server Administratorxxxxxx@xxxxxx.com
Hostname:Portxxxx.xxxxx.xxx:0
User/Groupapache(48)/48
Max RequestsPer Child: 0 - Keep Alive: on - Max Per Connection: 100
TimeoutsConnection: 60 - Keep-Alive: 15
Virtual ServerYes
Server Root/etc/httpd
Loaded Modulescore mod_so http_core mod_access_compat mod_actions mod_alias mod_allowmethods mod_auth_basic mod_auth_digest mod_authn_anon mod_authn_core mod_authn_dbd mod_authn_dbm mod_authn_file mod_authn_socache mod_authz_core mod_authz_dbd mod_authz_dbm mod_authz_groupfile mod_authz_host mod_authz_owner mod_authz_user mod_autoindex mod_cache mod_cache_disk mod_data mod_dbd mod_deflate mod_dir mod_dumpio mod_echo mod_env mod_expires mod_ext_filter mod_filter mod_headers mod_include mod_info mod_log_config mod_logio mod_mime_magic mod_mime mod_negotiation mod_remoteip mod_reqtimeout mod_rewrite mod_setenvif mod_slotmem_plain mod_slotmem_shm mod_socache_dbm mod_socache_memcache mod_socache_shmcb mod_status mod_substitute mod_suexec mod_unique_id mod_unixd mod_userdir mod_version mod_vhost_alias mod_dav mod_dav_fs mod_dav_lock mod_lua prefork mod_proxy mod_lbmethod_bybusyness mod_lbmethod_byrequests mod_lbmethod_bytraffic mod_lbmethod_heartbeat mod_proxy_ajp mod_proxy_balancer mod_proxy_connect mod_proxy_express mod_proxy_fcgi mod_proxy_fdpass mod_proxy_ftp mod_proxy_http mod_proxy_scgi mod_proxy_wstunnel mod_ssl mod_systemd mod_cgi mod_perl mod_php7
以上显示 php7 安装成功！
centos6.6下怎么用yum安装php
是一个在Fedora和RedHat以及SUSE中的Shell前端软件包管理器。可以自动处理依赖性关系，并且一次安装所有依赖的软体包，无须繁琐地一次次下载、安装。使用yum安装PHP的前提准备：
1、yum update 检查一下系统更新 初次安装可能更新的时间会比较长，请耐心等待。
2、yum install gcc gcc-c++ ;安装gcc软件编译环境。
[root@lamp ~]# yum install php php-mysql php-common php-gd php-mbstring php-mcrypt php-devel php-xml
安装好php之后重启httpd ： /etc/init.d/httpd restart
设置成开机启动：
chkconfig httpd on
chkconfig mysqld on
整个过程我们不需要修改/etc/httpd/conf/httpd.conf 这就是版本高了的好处~
