如何解決：需求無法解決為symfony上一組可安裝的軟件包錯誤

Question

嗨，當我嘗試創建一個symfony項目時出現以下錯誤。 在我嘗試啟動另一個項目之前，該方法一直運行良好。 請幫助。

$ php composer.phar create-project symfony/framework-standard-edition BookSite

Installing symfony/framework-standard-edition (v2.6.3)
  - Installing symfony/framework-standard-edition (v2.6.3)
    Loading from cache

Created project in BookSite
Loading composer repositories with package information
Installing dependencies (including require-dev)
Your requirements could not be resolved to an installable set of packages.

  Problem 1

    - sensio/distribution-bundle v3.0.12 requires sensiolabs/security-checker ~2.0 -> satisfiable by sensiolabs/security-checker[v2.0.0].
    - sensio/distribution-bundle v3.0.13 requires sensiolabs/security-checker ~2.0 -> satisfiable by sensiolabs/security-checker[v2.0.0].
    - sensio/distribution-bundle v3.0.14 requires sensiolabs/security-checker ~2.0 -> satisfiable by sensiolabs/security-checker[v2.0.0].
    - sensio/distribution-bundle v3.0.15 requires sensiolabs/security-checker ~2.0 -> satisfiable by sensiolabs/security-checker[v2.0.0].
    - sensiolabs/security-checker v2.0.0 requires ext-curl * -> the requested PHP extension curl is missing from your system.
    - Installation request for sensio/distribution-bundle ~3.0.12 -> satisfiable by sensio/distribution-bundle[v3.0.12, v3.0.13, v3.0.14, v3.0.15].

Answer 1

安裝PHP擴展curl

apt-get安裝php5-curl

Answer 2

安裝php擴展名：

sudo apt安裝php7.0-curl