使用mac中已经自带的php，而默认情况下是没有mongodb扩展的，所以还无法使用php脚本访问mongodb
已经安装了brew，这个是mac下非常好用的一个安装软件的工具，类似于ubuntu下的apt-get，rpm等，直接使用brew search 或brew install就可以安装所需的工具。
通过brew search mongo，查到下列相关软件：
homebrew/php/php53-mongo homebrew/php/php56-mongo✔ mongo-c-driver [email protected]
homebrew/php/php54-mongo homebrew/php/php56-mongodb mongo-cxx-driver [email protected]
homebrew/php/php54-mongodb homebrew/php/php70-mongodb mongo-orchestration mongoose
homebrew/php/php55-mongo homebrew/php/php71-mongodb mongodb ✔ percona-server-mongodb
homebrew/php/php55-mongodb homebrew/php/php72-mongodb [email protected]
通过php -v，可以看到当前的php版本
php -v
PHP 5.6.30 (cli) (built: Mar 11 2017 09:56:27)
Copyright (c) 1997-2016 The PHP Group
Zend Engine v2.6.0, Copyright (c) 1998-2016 Zend Technologies
所以，选择了安装php56-mongo。执行命令 brew install homebrew/php/php56-mongo
然而，事情并没有想象得那么简单。。 安装后还是无法使用mongo扩展，搜索后，发现这篇文章：http://www.cnblogs.com/gabrialrx/p/5509018.html
内容很简单，但也很有效，内容如下：
brew install php56-mongo之后，启动php报这个错误
Warning: PHP Startup: mongo: Unable to initialize module
解决办法是source安装mongo扩展。
brew reinstall php56-mongo --build-from-source
果然，执行上述操作后，通过 php -m命令即可查询已安装的扩展。
php -m|grep mongo
mongo
最后通过下面的php脚本即可验证（先确认mongodb已安装并且启动）。新疆阿克苏地区
<?php
$m = new MongoClient(); // 连接默认主机和端口为：mongodb://localhost:27017
$db = $m->test; // 获取名称为 "test" 的数据库
$collection = $db->tcol; // 选择集合
$cursor = $collection->find();
// 迭代显示文档标题
foreach ($cursor as $document) {
echo $document["id"].' '.$document["name"] . "\n";
}
http://www.cere.cc/editor/attached/file/20200520/20200520225629_7073.html
http://www.cere.cc/editor/attached/file/20200520/20200520225623_6136.html
http://www.cere.cc/editor/attached/file/20200520/20200520225909_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520230101_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225701_2230.html
http://www.cere.cc/editor/attached/file/20200520/20200520225805_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225615_4886.html
http://www.cere.cc/editor/attached/file/20200520/20200520225925_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225549_3636.html
http://www.cere.cc/editor/attached/file/20200520/20200520225725_2230.html
http://www.cere.cc/editor/attached/file/20200520/20200520225957_2855.html
http://www.cere.cc/editor/attached/file/20200520/20200520230029_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225941_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225709_3323.html
http://www.cere.cc/editor/attached/file/20200520/20200520230005_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225605_2698.html
http://www.cere.cc/editor/attached/file/20200520/20200520230021_2698.html
http://www.cere.cc/editor/attached/file/20200520/20200520230037_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225829_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225933_3792.html
http://www.cere.cc/editor/attached/file/20200520/20200520225646_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225821_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225653_3167.html
http://www.cere.cc/editor/attached/file/20200520/20200520225749_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520230013_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225853_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225949_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225813_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225541_4261.html
http://www.cere.cc/editor/attached/file/20200520/20200520230109_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225733_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520230053_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520230045_3480.html
http://www.cere.cc/editor/attached/file/20200520/20200520225845_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225741_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225837_2542.html
http://www.cere.cc/editor/attached/file/20200520/20200520225557_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225901_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225637_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225917_2386.html
http://www.cere.cc/editor/attached/file/20200520/20200520225757_3480.html
http://www.cere.cc/editor/attached/file/20200520/20200520225717_2386.html