Symfony1 无法安装Composer:无法将您的需求解析为可安装的软件包集

我是symfony1.4的新手。我正在尝试在现有项目中安装composer我运行安装命令获取以下信息：

使用包信息加载composer存储库 安装依赖项（包括需要开发人员） 无法将您的需求解析为可安装的软件包集

问题1：

- symfony/console v2.5.4 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.5.3 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.5.2 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.5.1 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.5.0 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.9 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.8 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.7 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.6 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.5 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.4 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.3 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.2 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.1 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.4.0 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.9 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.8 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.7 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.6 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.5 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.4 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.3 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.2 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.19 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.18 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.17 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.16 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.15 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.14 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.13 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.12 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.11 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.10 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.1 requires php >=5.3.3 -> no matching package found.
- symfony/console v2.3.0 requires php >=5.3.3 -> no matching package found.
- Installation request for symfony/console ~2.3 -> satisfiable by symfony/console[v2.3.0, v2.3.1, v2.3.10, v2.3.11, v2.3.12, v2.3.13, v2.3.14, v2.3.15, v2.3.16, v2.3.17, v2.3.18, v2.3.19, v2.3.2, v2.3.3, v2.3.4, v2.3.5, v2.3.6, v2.3.7, v2.3.8, v2.3.9, v2.4.0, v2.4.1, v2.4.2, v2.4.3, v2.4.4, v2.4.5, v2.4.6, v2.4.7, v2.4.8, v2.4.9, v2.5.0, v2.5.1, v2.5.2, v2.5.3, v2.5.4].

潜在原因：

• 软件包名称中的输入错误
• 根据您的min，该软件包的版本不够稳定 最小稳定设置 见f 或者更多细节

请阅读以了解更多常见问题

---

问题。

安装Composer后，运行以下命令以安装Composer资产插件：

php composer.phar global require "fxp/composer-asset-plugin:~1.0.3"

---

你的php版本是什么？这个错误表明您使用的php版本太旧了。有趣的是，composer消息中提到的是Symfony 2.3到2.5，而不是您提到的1.4。为什么会这样？