升级php的时候报错：cannot find-lcares原因：缺少c-cares组件导致的可能原先安装的时候是急速安装，急速安装无需编译，更新的时候使用的是编译安装，需要服务器上有各种依赖

解决方案：

Debian|Ubuntu

apt-get updateapt-get install libc-ares-dev

RedHat|CentOS

yum install c-ares c-ares-devel

如果提示没有安装包，请执行下面命令解决7版本：下载依赖rpm包

wget http://mirror.centos.org/centos/7/os/x86_64/Packages/c-ares-devel-1.10.0-3.el7.x86_64.rpmwget http://mirror.centos.org/centos/7/os/x86_64/Packages/c-ares-1.10.0-3.el7.x86_64.rpm

安装：

rpm -ivh c-ares*.rpm

8版本：下载依赖rpm包

wgethttps://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/c-ares-devel-1.13.0-5.el8.x86_64.rpmwget https://vault.centos.org/centos/8/BaseOS/x86_64/os/Packages/c-ares-1.13.0-5.el8.x86_64.rpm

安装

rpm -ivh c-ares*.rpm