diff --git a/after/syntax/php.vim b/after/syntax/php.vim
index d5a47ee..17e772e 100644
--- a/after/syntax/php.vim
+++ b/after/syntax/php.vim
@@ -2,17 +2,18 @@ if exists('g:no_php_conceal') || !has('conceal') || &enc != 'utf-8'
     finish
 endif
 
-syntax match phpNiceOperator "||" conceal cchar=∨ contained containedin=phpRegion
-syntax match phpNiceOperator "&&" conceal cchar=∧ contained containedin=phpRegion
-syntax match phpNiceOperator "!" conceal cchar=¬ contained containedin=phpRegion
-syntax match phpNiceOperator "<=" conceal cchar=≤ contained containedin=phpRegion
-syntax match phpNiceOperator ">=" conceal cchar=≥ contained containedin=phpRegion
-syntax match phpNiceOperator "==" conceal cchar=≈ contained containedin=phpRegion
-syntax match phpNiceOperator "===" conceal cchar=≡ contained containedin=phpRegion
-syntax match phpNiceOperator "::" conceal cchar=∷ contained containedin=phpRegion
-syntax match phpNiceOperator "!=" conceal cchar=≠ contained containedin=phpRegion
-syntax match phpNiceRelation "=>" conceal cchar=⇛ contained containedin=phpRegion
-syntax match phpNiceMemberSelector "\->" conceal cchar=→ contained containedin=phpRegion
+syntax match phpNiceOperator "||" conceal cchar=∨ contained containedin=@phpClInside
+syntax match phpNiceOperator "&&" conceal cchar=∧ contained containedin=@phpClInside
+syntax match phpNiceOperator "!" conceal cchar=¬ contained containedin=@phpClInside
+syntax match phpNiceOperator "<=" conceal cchar=≤ contained containedin=@phpClInside
+syntax match phpNiceOperator ">=" conceal cchar=≥ contained containedin=@phpClInside
+syntax match phpNiceOperator "==" conceal cchar=≈ contained containedin=@phpClInside
+syntax match phpNiceOperator "===" conceal cchar=≡ contained containedin=@phpClInside
+syntax match phpNiceOperator "::" conceal cchar=∷ contained containedin=@phpClInside
+syntax match phpNiceOperator "!=" conceal cchar=≠ contained containedin=@phpClInside
+syntax match phpNiceOperator "!==" conceal cchar=≢ contained containedin=@phpClInside
+syntax match phpNiceRelation "=>" conceal cchar=⇛ contained containedin=@phpClInside
+syntax match phpNiceMemberSelector "\->" conceal cchar=→ contained containedin=@phpClInside
 
 hi link phpNiceOperator phpOperator
 hi link phpNiceStatement phpStatement
@@ -20,5 +21,3 @@ hi link phpNiceKeyword phpKeyword
 hi link phpNiceRelation phpRelation
 hi link phpNiceMemberSelector phpMemberSelector
 hi! link Conceal phpOperator
-
-setlocal conceallevel=2
diff --git a/ftplugin/php.vim b/ftplugin/php.vim
new file mode 100644
index 0000000..8d24dd2
--- /dev/null
+++ b/ftplugin/php.vim
@@ -0,0 +1,10 @@
+let s:save_cpo = &cpoptions
+set cpoptions-=C
+
+setlocal conceallevel=2
+
+let b:undo_ftplugin = (exists("b:undo_ftplugin") ? b:undo_ftplugin . "|" : "") .
+    \ "setlocal conceallevel<"
+
+let &cpoptions = s:save_cpo
+unlet s:save_cpo