CODE EXAMPLE FOR PHP

visual studio php dollar sign double click

Search for wordSeparator in preferences and replace this
  "editor.wordSeparators": "`~!@#%^&$*()-=+[{]}|;:'",.<>/?"
    with this 
  "editor.wordSeparators": "`~!@#%^&*()-=+[{]}|;:'",.<>/?"
Enjoy!