" Note: this version of the double-quoted string also contains
" @phpClStringIdentifiers, which means variables can go inside the string
syn cluster phpClExpressions add=phpStringDouble
syn region phpStringDouble matchgroup=phpQuoteDouble start=/"/ skip=/\\./ end=/"/
\ contained keepend extend
" Note: this version of the double-quoted string also contains
" @phpClStringIdentifiers, which means variables can go inside the string
syn cluster phpClExpressions add=phpStringDouble
syn region phpStringDouble matchgroup=phpQuoteDouble start=/"/ skip=/\\./ end=/"/
\ contained keepend extend