我正在尝试使用composer安装symfony。我使用以下命令
sudo composer create-project symfony/framework-standard-edition /var/www/html/infinite-jest
但我收到以下错误
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].
我做错了什么，我该怎么做？