+" Interpolated indentifiers (inside strings)
+syn match phpInterpEmptyKey "\[\]" contained display
+syn match phpInterpSimple "$\h\w*\(\[\w*\]\|->\h\w*\)\?" contained contains=phpIdentifier,phpInterpEmptyKey,phpMethods,phpMemberSelector display
+syn match phpInterpSimpleCurly "${\h\w*\(\[\w*\]\)\?" contained contains=phpIdentifierSimply,phpInterpEmptyKey display
+" syn match phpIdentifierSimply "${\h\w*}" contains=phpOperator,phpParent contained display
+"syn region phpInterpComplex matchgroup=phpParent start="{\$"rs=e-1 end="}" contains=phpIdentifier,phpMemberSelector,phpVarSelector,phpIdentifierComplexP contained extend
+"syn region phpIdentifierComplexP matchgroup=phpParent start="\[" end="]" contains=@phpClInside contained
+