直接运行命令 sudo pecl install mongodb
sudo pecl install mongodb sudo pecl install memcached sudo pecl install redis为什么是这条命令（以安装mongodb扩展为例）
进入pecl官网
搜索相应的扩展
可能出现的问题
- 安装redis出现以下错误：
pecl/redis is already installed and is the same as the released version 5.3.7install failed解决办法：
# 先卸载，再安装sudo pecl uninstall redissudo pecl install redis- 安装memcache扩展出现的错误
- 错误1
checking for the location of zlib... configure: error: memcache support requires ZLIB. Use --with-zlib-dir=<DIR> to specify prefix where ZLIB include and library are locatedERROR: `/private/tmp/pear/install/memcache/configure --with-php-config=/usr/local/opt/php@8.0/bin/php-config --enable-memcache-session=yes' failed解决办法 ：缺什么就安装什么
brew install zlib- 错误2
checking for libmemcached location... configure: error: memcached support requires libmemcached. Use --with-libmemcached-dir=<DIR> to specify the prefix where libmemcached headers and library are locatedERROR: `/private/tmp/pear/install/memcached/configure --with-php-config=/usr/local/opt/php@8.0/bin/php-config --with-libmemcached-dir=no --with-zlib-dir=no --with-system-fastlz=no --enable-memcached-igbinary=no --enable-memcached-msgpack=no --enable-memcached-json=no --enable-memcached-protocol=no --enable-memcached-sasl=yes --enable-memcached-session=yes' failed解决办法
brew install libmemcached来源地址：https://blog.csdn.net/silk_java/article/details/127053806
