foo.rb

template '/etc/php5/apache2/php.ini' do
  source 'php.ini.erb'
  cookbook 'php'
  owner 'root'
  group 'root'
  mode '0644'
end

gistfile1.txt

config.vm.provision :chef_solo do |chef|
    chef.json = {
      :php => {
        :directives => {
          :display_errors => 'On',
          :display_startup_errors => 'On',
          :error_reporting => '-1',
          :log_errors => 'On'
        }
      }
    }

    chef.run_list = [
        "recipe[vagrant_main]",
        "recipe[vagrant_main::wordpress]",
        "recipe[vagrant_main::drupal]",
        "recipe[vagrant_main::magento]"
    ]
  end