comment(<!-- from http://www.php.net/manual/en/keyword.class.php -->)
inline_delimiter(<?php)
reserved(class) class(Cart) operator({)
    reserved(var) local_variable($items)operator(;)  comment(// Items in our shopping cart)

    comment(// Add $num articles of $artnr to the cart)

    reserved(function) function(add_item)operator(()local_variable($artnr)operator(,) local_variable($num)operator(\)) operator({)
        local_variable($this)operator(->)ident(items)operator([)local_variable($artnr)operator(]) operator(+=) local_variable($num)operator(;)
    operator(})

    comment(// Take $num articles of $artnr out of the cart)

    reserved(function) function(remove_item)operator(()local_variable($artnr)operator(,) local_variable($num)operator(\)) operator({)
        reserved(if) operator(()local_variable($this)operator(->)ident(items)operator([)local_variable($artnr)operator(]) operator(>) local_variable($num)operator(\)) operator({)
            local_variable($this)operator(->)ident(items)operator([)local_variable($artnr)operator(]) operator(-=) local_variable($num)operator(;)
            reserved(return) pre_constant(true)operator(;)
        operator(}) reserved(elseif) operator(()local_variable($this)operator(->)ident(items)operator([)local_variable($artnr)operator(]) operator(==) local_variable($num)operator(\)) operator({)
            predefined(unset)operator(()local_variable($this)operator(->)ident(items)operator([)local_variable($artnr)operator(])operator(\))operator(;)
            reserved(return) pre_constant(true)operator(;)
        operator(}) reserved(else) operator({)
            reserved(return) pre_constant(false)operator(;)
        operator(})
    operator(})
operator(})
inline_delimiter(?>)


inline_delimiter(<?php)
reserved(class) class(Cart) operator({)
    comment(/* None of these will work in PHP 4. */)
    reserved(var) local_variable($todays_date) operator(=) predefined(date)operator(()string<delimiter(")content(Y-m-d)delimiter(")>operator(\))operator(;)
    reserved(var) local_variable($name) operator(=) local_variable($firstname)operator(;)
    reserved(var) local_variable($owner) operator(=) string<delimiter(')content(Fred )delimiter(')> operator(.) string<delimiter(')content(Jones)delimiter(')>operator(;)
    comment(/* Arrays containing constant values will, though. */)
    reserved(var) local_variable($items) operator(=) predefined(array)operator(()string<delimiter(")content(VCR)delimiter(")>operator(,) string<delimiter(")content(TV)delimiter(")>operator(\))operator(;)
operator(})

comment(/* This is how it should be done. */)
reserved(class) class(Cart) operator({)
    reserved(var) local_variable($todays_date)operator(;)
    reserved(var) local_variable($name)operator(;)
    reserved(var) local_variable($owner)operator(;)
    reserved(var) local_variable($items) operator(=) predefined(array)operator(()string<delimiter(")content(VCR)delimiter(")>operator(,) string<delimiter(")content(TV)delimiter(")>operator(\))operator(;)

    reserved(function) function(Cart)operator(()operator(\)) operator({)
        local_variable($this)operator(->)ident(todays_date) operator(=) predefined(date)operator(()string<delimiter(")content(Y-m-d)delimiter(")>operator(\))operator(;)
        local_variable($this)operator(->)ident(name) operator(=) predefined($GLOBALS)operator([)string<delimiter(')content(firstname)delimiter(')>operator(])operator(;)
        comment(/* etc. . . */)
    operator(})
operator(})
inline_delimiter(?>)

inline_delimiter(<?php)
reserved(class) class(A)
operator({)
    reserved(function) function(foo)operator(()operator(\))
    operator({)
        reserved(if) operator(()predefined(isset)operator(()local_variable($this)operator(\))operator(\)) operator({)
            predefined(echo) string<delimiter(')content($this is defined ()delimiter(')>operator(;)
            predefined(echo) predefined(get_class)operator(()local_variable($this)operator(\))operator(;)
            predefined(echo) string<delimiter(")content(\))char(\\n)delimiter(")>operator(;)
        operator(}) reserved(else) operator({)
            predefined(echo) string<delimiter(")char(\\$)content(this is not defined.)char(\\n)delimiter(")>operator(;)
        operator(})
    operator(})
operator(})

reserved(class) class(B)
operator({)
    reserved(function) function(bar)operator(()operator(\))
    operator({)
        constant(A)operator(::)ident(foo)operator(()operator(\))operator(;)
    operator(})
operator(})

local_variable($a) operator(=) reserved(new) constant(A)operator(()operator(\))operator(;)
local_variable($a)operator(->)ident(foo)operator(()operator(\))operator(;)
constant(A)operator(::)ident(foo)operator(()operator(\))operator(;)
local_variable($b) operator(=) reserved(new) constant(B)operator(()operator(\))operator(;)
local_variable($b)operator(->)ident(bar)operator(()operator(\))operator(;)
constant(B)operator(::)ident(bar)operator(()operator(\))operator(;)
inline_delimiter(?>)