为php安装zip扩展
wget http://pecl.php.net/get/zip-1.13.5.tgz
tar -zvxf zip-1.13.5.tgz
cd zip-1.13.5
/home/xxx/php/bin/phpize
出现错误：
Cannot find autoconf. Please check your autoconf installation and the $PHP_AUTOCONF environment variable. Then, rerun this script.
解决方法：
yum install m4
yum install autoconf
再安装：
/home/xxx/php/bin/phpize
./configure --with-php-config=/home/xxx/php/bin/php-config
make
make install
然后修改php.ini,添加：
extension=zip.so
重启apache，查看phpinfo是否安装成功
