diff --git a/manifests/mod/php.pp b/manifests/mod/php.pp
index 25f857a4..0f15fba3 100644
--- a/manifests/mod/php.pp
+++ b/manifests/mod/php.pp
@@ -1,118 +1,118 @@
 # @summary
 #   Installs `mod_php`.
 # 
 # @todo
 #   Add docs
 class apache::mod::php (
   $package_name     = undef,
   $package_ensure   = 'present',
   $path             = undef,
   Array $extensions = ['.php'],
   $content          = undef,
   $template         = 'apache/mod/php.conf.erb',
   $source           = undef,
   $root_group       = $apache::params::root_group,
   $php_version      = $apache::params::php_version,
   $libphp_prefix    = 'libphp'
 ) inherits apache::params {
   include apache
   if (versioncmp($php_version, '7') <= 0) {
     $mod = "php${php_version}"
   } else {
-    $mod = "php"
+    $mod = 'php'
   }
 
   if $apache::version::scl_httpd_version == undef and $apache::version::scl_php_version != undef {
     fail('If you define apache::version::scl_php_version, you also need to specify apache::version::scl_httpd_version')
   }
   if defined(Class['::apache::mod::prefork']) {
     Class['::apache::mod::prefork']->File["${mod}.conf"]
   }
   elsif defined(Class['::apache::mod::itk']) {
     Class['::apache::mod::itk']->File["${mod}.conf"]
   }
   else {
     fail('apache::mod::php requires apache::mod::prefork or apache::mod::itk; please enable mpm_module => \'prefork\' or mpm_module => \'itk\' on Class[\'apache\']')
   }
 
   if $source and ($content or $template != 'apache/mod/php.conf.erb') {
     warning('source and content or template parameters are provided. source parameter will be used')
   } elsif $content and $template != 'apache/mod/php.conf.erb' {
     warning('content and template parameters are provided. content parameter will be used')
   }
 
   $manage_content = $source ? {
     undef   => $content ? {
       undef   => template($template),
       default => $content,
     },
     default => undef,
   }
 
   # Determine if we have a package
   $mod_packages = $apache::mod_packages
   if $package_name {
     $_package_name = $package_name
   } elsif has_key($mod_packages, $mod) { # 2.6 compatibility hack
     $_package_name = $mod_packages[$mod]
   } elsif has_key($mod_packages, 'phpXXX') { # 2.6 compatibility hack
     $_package_name = regsubst($mod_packages['phpXXX'], 'XXX', $php_version)
   } else {
     $_package_name = undef
   }
 
   $_php_major = regsubst($php_version, '^(\d+)\..*$', '\1')
   $_php_version_no_dot = regsubst($php_version, '\.', '')
   if $apache::version::scl_httpd_version {
     $_lib = "librh-php${_php_version_no_dot}-php${_php_major}.so"
   } else {
     # Controls php version and libphp prefix
     $_lib = "${libphp_prefix}${php_version}.so"
   }
 
   if $::operatingsystem == 'SLES' {
     ::apache::mod { $mod:
       package        => $_package_name,
       package_ensure => $package_ensure,
       lib            => "mod_${mod}.so",
       id             => "php${_php_major}_module",
       path           => "${apache::lib_path}/mod_${mod}.so",
     }
   } elsif (versioncmp($php_version, '7') <= 0) {
     ::apache::mod { $mod:
       package        => $_package_name,
       package_ensure => $package_ensure,
       lib            => $_lib,
       id             => "php${_php_major}_module",
       path           => $path,
     }
   } else {
     ::apache::mod { $mod:
         package        => $_package_name,
         package_ensure => $package_ensure,
         lib            => "${libphp_prefix}.so",
-        id             => "php_module",
+        id             => 'php_module',
         path           => $path,
     }
   }
 
   include apache::mod::mime
   include apache::mod::dir
   Class['::apache::mod::mime'] -> Class['::apache::mod::dir'] -> Class['::apache::mod::php']
 
   # Template uses $extensions
   file { "${mod}.conf":
     ensure  => file,
     path    => "${apache::mod_dir}/${mod}.conf",
     owner   => 'root',
     group   => $root_group,
     mode    => $apache::file_mode,
     content => $manage_content,
     source  => $source,
     require => [
       Exec["mkdir ${apache::mod_dir}"],
     ],
     before  => File[$apache::mod_dir],
     notify  => Class['apache::service'],
   }
 }