class php::apc(
  $ensure = 'present',
) {
  $fpm              = $::php::fpm
  $series           = $::php::series
  $services_version = regsubst($series,           '5', '5.6')
  $services_name    = regsubst($services_version, '^', 'php')
  $services         = regsubst($services_name,    '$', '-fpm')

  package { [ 'php-apcu', 'php-apcu-bc' ]:
    ensure => $ensure,
    notify => $fpm ? {
      'present' => Service[$services],
      default   => undef,
    },
  }
}