这是我所做的：
1）我在命令中安装驱动程序：
$ sudo pecl install mongo
Password:
WARNING: "pecl/mongo" is deprecated in favor of "channel:///mongodb"
downloading mongo-1.6.12.tgz ...
Starting to download mongo-1.6.12.tgz (209,252 bytes)
.............................................done: 209,252 bytes
118 source files, building
running: phpize
Configuring for:
PHP Api Version: 20121113
Zend Module Api No: 20121212
Zend Extension Api No: 220121212
Build with Cyrus SASL (MongoDB Enterprise Authentication) support? [no] :
building in /private/tmp/pear/install/pear-build-rootTF9cNk/mongo-1.6.12
running: /private/tmp/pear/install/mongo/configure --with-php-config=/usr/bin/php-config --with-mongo-sasl=no
running: make
make: *** No targets specified and no makefile found. Stop.
ERROR: `make' failed。
2）我让源代码手动下载代码并解压缩
$ phpize
Configuring for:
PHP Api Version: 20121113
Zend Module Api No: 20121212
Zend Extension Api No: 220121212
$ ./configure
$ make
make: *** No targets specified and no makefile found. Stop.
包 https://pecl.php.net/package/mongo 已被 https://pecl.php.net/package/mongodb 取代。安装它为
sudo pecl install mongodb