使用Symfony2安装MongoDbBundle

我想用我的Symfony2应用程序设置MongoDbBundle。但是我在运行时会得到theese错误列表composer update：

Problem 1
- doctrine/mongodb 1.0.9 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.8 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.7 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.6 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.5 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.4 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.3 requires ext-mongo >=1.2.12,<1.5-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.2 requires ext-mongo >=1.2.12,<1.4-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.11 requires ext-mongo >=1.2.12,<1.7-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.10 requires ext-mongo >=1.2.12,<1.7-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.1 requires ext-mongo >=1.2.12,<1.4-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.0.0 requires ext-mongo >=1.2.12,<1.4-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.1.8 requires ext-mongo >=1.2.12,<1.7-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.1.7 requires ext-mongo >=1.2.12,<1.7-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.1.6 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb 1.1.5 requires ext-mongo >=1.2.12,<1.6-dev -> the requested PHP extension mongo is missing from your system.
- doctrine/mongodb-odm 1.0.0-BETA5 requires doctrine/mongodb 1.0.0-BETA1 -> no matching package found.
- doctrine/mongodb-odm 1.0.0-BETA4 requires doctrine/mongodb 1.0.0-BETA1 -> no matching package found.
- symfony/framework-standard-edition 2.5.x-dev requires doctrine/mongodb-odm 1.0.*@beta -> satisfiable by doctrine/mongodb-odm[1.0.0-BETA10, 1.0.0-BETA11, 1.0.0-BETA12, 1.0.0-BETA4, 1.0.0-BETA5, 1.0.0-BETA6, 1.0.0-BETA7, 1.0.0-BETA8, 1.0.0-BETA9].
- doctrine/mongodb-odm 1.0.0-BETA6 requires doctrine/mongodb >=1.0.0-beta1,<1.1-dev -> satisfiable by doctrine/mongodb[1.0.0, 1.0.1, 1.0.10, 1.0.11, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
- doctrine/mongodb-odm 1.0.0-BETA7 requires doctrine/mongodb 1.0.* -> satisfiable by doctrine/mongodb[1.0.0, 1.0.1, 1.0.10, 1.0.11, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
- doctrine/mongodb-odm 1.0.0-BETA8 requires doctrine/mongodb 1.0.* -> satisfiable by doctrine/mongodb[1.0.0, 1.0.1, 1.0.10, 1.0.11, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
- doctrine/mongodb-odm 1.0.0-BETA9 requires doctrine/mongodb 1.0.* -> satisfiable by doctrine/mongodb[1.0.0, 1.0.1, 1.0.10, 1.0.11, 1.0.2, 1.0.3, 1.0.4, 1.0.5, 1.0.6, 1.0.7, 1.0.8, 1.0.9].
- doctrine/mongodb-odm 1.0.0-BETA10 requires doctrine/mongodb >=1.1.5,<2.0 -> satisfiable by doctrine/mongodb[1.1.5, 1.1.6, 1.1.7, 1.1.8].
- doctrine/mongodb-odm 1.0.0-BETA11 requires doctrine/mongodb >=1.1.5,<2.0 -> satisfiable by doctrine/mongodb[1.1.5, 1.1.6, 1.1.7, 1.1.8].
- doctrine/mongodb-odm 1.0.0-BETA12 requires doctrine/mongodb >=1.1.5,<2.0 -> satisfiable by doctrine/mongodb[1.1.5, 1.1.6, 1.1.7, 1.1.8].
- Installation request for symfony/framework-standard-edition 2.5.x-dev -> satisfiable by symfony/framework-standard-edition[2.5.x-dev].

我在这里找到了解决方案，将我的php mongo扩展名降级为compsoer.phar，但仍然出现相同的错误。我做错了什么？

这是我的composer.json文件：

"require": {
    "php": ">=5.3.3",
    "symfony/symfony": "2.5.*",
    "doctrine/orm": "~2.2,>=2.2.3",
    "doctrine/doctrine-bundle": "~1.2",
    "twig/extensions": "~1.0",
    "symfony/assetic-bundle": "~2.3",
    "symfony/swiftmailer-bundle": "~2.3",
    "symfony/monolog-bundle": "~2.4",
    "sensio/distribution-bundle": "~3.0",
    "sensio/framework-extra-bundle": "~3.0",
    "incenteev/composer-parameter-handler": "~2.0",
    "doctrine/doctrine-fixtures-bundle": "2.2.*",
    "doctrine/migrations": "1.0.*@dev",
    "doctrine/doctrine-migrations-bundle": "2.1.*@dev",
    "hautelook/alice-bundle": "~0.2",
    "nelmio/alice": "~1.7",
    "stof/doctrine-extensions-bundle": "1.2.*@dev",
    "knplabs/knp-menu-bundle": "~2.0",
    "doctrine/mongodb-odm": "1.0.*@beta",
    "doctrine/mongodb-odm-bundle": "3.0.*@beta"
},

编辑

我什至尝试更改“最小稳定性”属性。将ext-mongo降级到1.4.5和1.2.12版本。仍然有同样的错误。

解决

通过在cli中运行来解决此问题： sudo apt-get install php5-mongo