方法一：
yum 安装
默认的版本太低了，手动安装有一些麻烦，想采用Yum安装的可以使用下面的方案：1.检查当前安装的PHP包yum list installed | grep php如果有安装的PHP包，先删除他们 yum remove php.x86_64 php-cli.x86_64 php-common.x86_64 php-gd.x86_64 php-ldap.x86_64 php-mbstring.x86_64 php-mcrypt.x86_64 php-mysql.x86_64 php-pdo.x86_642.Centos 5.X rpm -Uvh http://mirror.webtatic.com/yum/el5/latest.rpm CentOs 6.x rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm CentOs 7.X rpm -Uvh rpm -Uvh https://mirror.webtatic.com/yum/el7/webtatic-release.rpm如果想删除上面安装的包，重新安装rpm -qa | grep webstaticrpm -e 上面搜索到的包即可3.运行yum installyum install php55w.x86_64 php55w-cli.x86_64 php55w-common.x86_64 php55w-gd.x86_64 php55w-ldap.x86_64 php55w-mbstring.x86_64 php55w-mcrypt.x86_64 php55w-mysql.x86_64 php55w-pdo.x86_64yum install php56w.x86_64 php56w-cli.x86_64 php56w-common.x86_64 php56w-gd.x86_64 php56w-ldap.x86_64 php56w-mbstring.x86_64 php56w-mcrypt.x86_64 php56w-mysql.x86_64 php56w-pdo.x86_64注：如果想升级到5.6把上面的55w换成56w就可以了。yum install php70w.x86_64 php70w-cli.x86_64 php70w-common.x86_64 php70w-gd.x86_64 php70w-ldap.x86_64 php70w-mbstring.x86_64 php70w-mcrypt.x86_64 php70w-mysql.x86_64 php70w-pdo.x86_644.安装PHP FPMyum install php55w-fpm yum install php56w-fpm yum install php70w-fpm |
方法二：
源码安装：
将之前的源码安装的版本备份为其他的名字mv /usr/local/php/ /usr/local/php5.3安装libiconv mkdir -p /usr/local/setupcd /usr/local/setupwget tar zxvf libiconv-1.14.tar.gzcd libiconv-1.14./configure --prefix=/usr/local/libiconvmake && make installcd ..安装libmcrypt wget tar zxvf libmcrypt-2.5.8.tar.gzcd libmcrypt-2.5.8./configuremake && make installcd ..安装mhash tar jxvf mhash-0.9.3.tar.bz2cd mhash-0.9.3./configuremake && make installcd ..安装mcrypt wget tar zxvf mcrypt-2.6.8.tar.gzcd mcrypt-2.6.8./configuremake && make installcd ..安装PHP 5.5.5 wget tar zxvf php-5.5.5.tar.gzcd php-5.5.5 正式编译，注意安装路径不能与旧版本路径相同 ./configure --prefix=/usr/local/php --with-config-file-path=/usr/local/php/etc --enable-fpm --with-fpm-user=www --with-fpm-group=www --with-mysql=mysqlnd --with-mysqli=mysqlnd --with-pdo-mysql=mysqlnd --with-iconv-dir --with-freetype-dir --with-jpeg-dir --with-png-dir --with-zlib --with-libxml-dir=/usr --enable-xml --disable-rpath --enable-magic-quotes --enable-safe-mode --enable-bcmath --enable-shmop --enable-sysvsem --enable-inline-optimization --with-curl --with-curlwrappers --enable-mbregex --enable-mbstring --with-mcrypt --enable-ftp --with-gd --enable-gd-native-ttf --with-openssl --with-mhash --enable-pcntl --enable-sockets --with-xmlrpc --enable-zip --enable-soap --without-pear --with-gettext --disable-fileinfo --enable-maintainer-zts make && make install |