http://www.php100.com/html/php/rumen/2013/0909/6094.html
在centos直接使用yum install 安装php的话版本比较低，如果需要高版本的话，请看如下：
Step 1: Installing Remi Repository
01.## Install Remi & Epel Repository on RHEL/CentOS 6.4-6.0 - 32 Bit ##04. 05.## Install Remi & Epel Repository on RHEL/CentOS 6.4-6.0 - 64 Bit ##08. 09.## Install Remi Repository on RHEL/CentOS 5.9-5.0 - 32 Bit ##12. 13.## Install Remi Repository on RHEL/CentOS 5.9-5.0 - 64 Bit ##Step 2: Installing Apache, MySQL 5.5.32 & PHP 5.5.0
1.## Installing on RHEL/CentOS 5-6 ##2.# yum --enablerepo=remi,remi-test install httpd mysql mysql-server php php-commonStep 3: Installing PHP 5.5.0 Modules
1.## Installing on RHEL/CentOS 5-6 ##2.# yum --enablerepo=remi,remi-test install php-mysql php-pgsql php-pecl-mongo php-sqlite3.php-pecl-memcache php-pecl-memcached php-gd php-mbstring php-mcrypt php-xml php-pecl-apc php-cli4.php-pear php-pdoStep 4: Starting/Stopping Apache & MySQL 5.5.32
01.## Enable Apache and MySQL on Run-Levels ##02.# chkconfig --levels 235 httpd on03.# chkconfig --levels 235 mysqld on04. 05.## Apache Commands ##06.# /etc/init.d/httpd start07.# /etc/init.d/httpd stop08.# /etc/init.d/httpd status09. 10.## MySQL Commands ##11.# /etc/init.d/mysqld start12.# /etc/init.d/mysqld stop13.# /etc/init.d/mysqld status14.好了差不多了，配置测试之类网上很多资料！！！