安装Laravel - php版本

I'm trying to install Laravel but when creating a project with (composer /composer create-project laravel/laravel /my-path/), but I get these errors:

Your requirements could not be resolved to an installable set of packages.

Problem 1

  • laravel/framework v4.2.9 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.8 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.7 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.6 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.5 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.4 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.3 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.2 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.11 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.10 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.1 requires php >=5.4.0 -> no matching package found.
  • laravel/framework v4.2.0 requires php >=5.4.0 -> no matching package found.
  • Installation request for laravel/framework 4.2.* -> satisfiable by laravel/framework[v4.2.0, v4.2.1, v4.2.10, v4.2.11, v4.2.2, v4.2.3, v4.2.4, v4.2.5, v4.2.6, v4.2.7, v4.2.8, v4.2.9].

Potential causes:

I don't understand as I'm using MAMP on Mac OSX 10.8.5 with php 5.5.3 (and also 5.2.17).

Thanks for the help!

I updated my PHP to 5.5.3 using this tutorial: http://ziad.eljammal.com/install-php-5-5-on-mac-os-x/