Nginx与apache、lighttp性能综合对比，如下图:
注意：关闭rpm默认安装的apache和mysql
1.准备php函数的rpm包
yum -y install gcc gcc-c++ autoconf libjpeg libjpeg-devel libpng libpng-devel freetype freetype-devel libxml2 libxml2-devel zlib zlib-devel glibc glibc-devel glib2 glib2-devel bzip2 bzip2-devel ncurses ncurses-devel curl curl-d
