yum 安装php5.5

yum remove php php-bcmath php-cli php-common php-devel php-fpm php-gd php-imap php-ldap php-mbstring php-mcrypt php-mysql php-odbc php-pdo php-pear php-pecl-igbinary php-xml php-xmlrpc

rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm

yum install php55w php55w-bcmath php55w-cli php55w-common php55w-devel php55w-fpm php55w-gd php55w-imap php55w-ldap php55w-mbstring php55w-mcrypt php55w-mysql php55w-odbc php55w-pdo php55w-pear php55w-pecl-igbinary php55w-xml php55w-xmlrpc php55w-opcache php55w-intl php55w-pecl-memcache

wget http://pecl.php.net/get/yaf
tar zxvf yaf
cd yaf-2.3.3
phpize
./configure
make && make install
echo "extension=yaf.so" >> /etc/php.ini