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 yumlistinstalled|grepPHP 如果有安装的PHP包，先删除他们 yumremovePHP.x86_64PHP-cli.x86_64PHP-common.x86_64PHP-gd.x86_64PHP-ldap.x86_64PHP-mbstring.x86_64PHP-mcrypt.x86_64PHP-MysqL.x86_64PHP-pdo.x86_64 2.Centos5.Xrpm-Uvhhttp://mirror.webtatic.com/yum/el5/latest.rpm CentOs6.xrpm-Uvhhttp://mirror.webtatic.com/yum/el6/latest.rpm CentOs7.Xrpm-Uvh rpm-Uvhhttps://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|grepwebstatic rpm-e上面搜索到的包即可 3.运行yuminstall yuminstallPHP55w.x86_64PHP55w-cli.x86_64PHP55w-common.x86_64PHP55w-gd.x86_64PHP55w-ldap.x86_64PHP55w-mbstring.x86_64PHP55w-mcrypt.x86_64PHP55w-MysqL.x86_64PHP55w-pdo.x86_64 yuminstallPHP56w.x86_64PHP56w-cli.x86_64PHP56w-common.x86_64PHP56w-gd.x86_64PHP56w-ldap.x86_64PHP56w-mbstring.x86_64PHP56w-mcrypt.x86_64PHP56w-MysqL.x86_64PHP56w-pdo.x86_64 注：如果想升级到5.6把上面的55w换成56w就可以了。 yuminstallPHP70w.x86_64PHP70w-cli.x86_64PHP70w-common.x86_64PHP70w-gd.x86_64PHP70w-ldap.x86_64PHP70w-mbstring.x86_64PHP70w-mcrypt.x86_64PHP70w-MysqL.x86_64PHP70w-pdo.x86_64 4.安装PHPFPM yuminstallPHP55w-fpm yuminstallPHP56w-fpm yuminstallPHP70w-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/setup wget tarzxvflibiconv-1.14.tar.gz cdlibiconv-1.14 ./configure--prefix=/usr/local/libiconv make&&makeinstall cd.. 安装libmcrypt wget tarzxvflibmcrypt-2.5.8.tar.gzcdlibmcrypt-2.5.8 ./configuremake&&makeinstall cd.. 安装mhash tarjxvfmhash-0.9.3.tar.bz2 cdmhash-0.9.3 ./configure make&&makeinstall cd.. 安装mcrypt wget tarzxvfmcrypt-2.6.8.tar.gzcdmcrypt-2.6.8 ./configuremake&&makeinstall cd.. 安装PHP5.5.5 wget tarzxvfPHP-5.5.5.tar.gz cdPHP-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&&makeinstall