mysql扩展下载
http://git.php.net/?p=pecl/database/mysql.git;a=summary

使用phpize工具初始化
sudo /usr/local/bin/phpize

报错提示

Cannot find autoconf. Please check your autoconf installation and the
$PHP_AUTOCONF environment variable. Then, rerun this script.

解决措施：
sudo yum install -y m4 autoconf

编译mysql扩展
sudo ./configure --with-php-config=/usr/local/bin/php-config --with-mysql=mysqlnd

sudo make && sudo make install