brew search php

==> Searching local taps...
php@5.6 ✔       php@7.1 ✔       brew-php-switcher   php          php-code-sniffer   php-cs-fixer     php@7.0        phplint        phpunit
==> Searching taps on GitHub...
homebrew/cask/eclipse-php                                       homebrew/cask/netbeans-php
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brew install php@7.1

php -v

PHP 7.1.18 (cli) (built: May 25 2018 19:18:42) ( NTS )
Copyright (c) 1997-2018 The PHP Group
Zend Engine v3.1.0, Copyright (c) 1998-2018 Zend Technologies
  with Zend OPcache v7.1.18, Copyright (c) 1999-2018, by Zend Technologies
  with Xdebug v2.6.0, Copyright (c) 2002-2018, by Derick Rethans

pecl安装

curl -O http://pear.php.net/go-pear.phar
sudo php -d detect_unicode=0 go-pear.phar
一路回车到最后，然后
pecl version

pecl 安装扩展

pecl search mongodb 前面直接安装就行，然后我下面展示最后显示的内容

Build process completed successfully
Installing '/usr/local/Cellar/php@7.1/7.1.18/pecl/20160303/mongodb.so'
install ok: channel://pecl.php.net/mongodb-1.4.4
Extension mongodb enabled in php.ini

这个时候我的php.ini 是软连接到的etc下面，然后上面安装的扩展会自动安装到php.ini中，然后我们把里面加载的删除掉

# xdebug.so编译到了  /usr/local/Cellar/php@7.1/7.1.18/lib/php/20160303/ 目录下

$ cd /usr/local/Cellar/php@7.1/7.1.18/ && ll


# 将mongodb.so移动到php@7.1默认扩展目录
cp /usr/local/Cellar/php@7.1/7.1.18/pecl/20160303/mongodb.so /usr/local/Cellar/php@7.1/7.1.18/lib/php/20160303

php –ini 查看

Configuration File (php.ini) Path: /usr/local/etc/php/7.1
Loaded Configuration File:     /usr/local/etc/php/7.1/php.ini
Scan for additional .ini files in: /usr/local/etc/php/7.1/conf.d
Additional .ini files parsed:   /usr/local/etc/php/7.1/conf.d/ext-opcache.ini,
/usr/local/etc/php/7.1/conf.d/mongodb.ini,
/usr/local/etc/php/7.1/conf.d/redis.ini,
/usr/local/etc/php/7.1/conf.d/xdebug.ini

修改php.ini的配置

删除上面加入的

extension="mongodb.so"

# 在`/usr/local/etc/php/7.1/conf.d`目录下新增mongodb.ini

$ vim /usr/local/etc/php/7.1/conf.d/mongodb.ini
# 加入以下内容
[mongodb]
extension="mongodb.so"

查看扩展

php -m