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PHP开发，YII2.0框架开发
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环境为lnmp, php为5.5.7,安装出现这个问题：
Problem 1

- yiisoft/yii2-mongodb 2.1.2 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- yiisoft/yii2-mongodb 2.1.1 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- yiisoft/yii2-mongodb 2.1.0 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- fancyecommerce/fecshop 1.0.0.9 requires yiisoft/yii2-mongodb ~2.1.0 -> satisfiable by yiisoft/yii2-mongodb[2.1.0, 2.1.1, 2.1.2].
- Installation request for fancyecommerce/fecshop 1.0.0.9 -> satisfiable by fancyecommerce/fecshop[1.0.0.9].

To enable extensions, verify that they are enabled in your .ini files:

- /alidata/server/php/etc/php.ini

You can also run php --ini inside terminal to see which files are used by PHP in CLI mode.
使用phpinfo函数，发现PHP环境中的模块中已经配置mongo,如下
MongoDB Support enabled
Version 1.6.14
Streams Support enabled
SSL Support enabled
Supported Authentication Mechanisms
MONGODB-CR enabled
SCRAM-SHA-1 enabled
MONGODB-X509 enabled
GSSAPI (Kerberos) disabled
PLAIN disabled
求解？

环境为lnmp, php为5.5.7,安装出现这个问题：
Problem 1

- yiisoft/yii2-mongodb 2.1.2 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- yiisoft/yii2-mongodb 2.1.1 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- yiisoft/yii2-mongodb 2.1.0 requires ext-mongodb >=1.0.0 -> the requested PHP extension mongodb is missing from your system.
- fancyecommerce/fecshop 1.0.0.9 requires yiisoft/yii2-mongodb ~2.1.0 -> satisfiable by yiisoft/yii2-mongodb[2.1.0, 2.1.1, 2.1.2].
- Installation request for fancyecommerce/fecshop 1.0.0.9 -> satisfiable by fancyecommerce/fecshop[1.0.0.9].

To enable extensions, verify that they are enabled in your .ini files:

- /alidata/server/php/etc/php.ini

You can also run php --ini inside terminal to see which files are used by PHP in CLI mode.
使用phpinfo函数，发现PHP环境中的模块中已经配置mongo,如下
MongoDB Support enabled
Version 1.6.14
Streams Support enabled
SSL Support enabled
Supported Authentication Mechanisms
MONGODB-CR enabled
SCRAM-SHA-1 enabled
MONGODB-X509 enabled
GSSAPI (Kerberos) disabled
PLAIN disabled
求解？

wget http://pecl.php.net/get/mongodb-1.2.5.tgz
tar -zxf mongodb-1.2.5.tgz && cd mongodb-1.2.5
/usr/local/php/bin/phpize
./configure --with-php-config=/usr/local/php/bin/php-config
make && make install

不是扩展版本问题，1.2.2的mongodb扩展已经是最新的了