1.網站遷移或者PHP升級可能會出現下面的情況
缺少could not find php_pdo
解決辦法 ：升級php即可
yum remove php*
yum clean all
wget http://dl.fedoraproject.org/pub/epel/6/i386/epel-release-6-8.noarch.rpm
wget http://rpms.famillecollet.com/enterprise/remi-release-6.rpm
rpm -Uvh remi-release-6.rpm epel-release-6.rpm
rpm -Uvh http://mirror.webtatic.com/yum/el6/latest.rpm
yum install php56-fpm
yum install php56
測試 /usr/bin/php -v
/usr/sbin/php-fpm -v
PDOException
2.缺少 could not find driver
yum install php-devel -y
yum install php-mysqlnd
查看php支持的模塊
php -m
測試網站是否恢復正常