The ICU version is unknown, as the constant INTL_ICU_VERSION is not defined解决办法
最近WordPress的健康监测中提示：“The ICU version is unknown, as the constant INTL_ICU_VERSION is not defined”。 查了下，发现是缺失了一个php的驱动所致，解决办法也很简单： yum install php-intl -y 安装驱动后，重启web服务即可。
