PHP code highlighting in listings for pdflatex.

PHP_highlighting_example.tex

\documentclass{article}

% To write dummy text
\usepackage{lipsum}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
% My solution to highlighting PHP code with listings package in pdflatex
% Inspired by this discussion: https://tex.stackexchange.com/questions/53928/is-there-a-good-definition-for-highlighting-php-code-in-listings

\usepackage{listings}
\usepackage{xcolor}
\usepackage{lstautogobble}

\definecolor{PHP_comment}{HTML}{FF8000}
\definecolor{PHP_default}{HTML}{000000}
\definecolor{PHP_keyword}{HTML}{6c9c11}
\definecolor{PHP_emph1}{HTML}{0F58A2}
\definecolor{PHP_emph2}{HTML}{CCAA00}
\definecolor{PHP_emph4}{HTML}{C60484}
\definecolor{PHP_string}{HTML}{C78F0A}
\definecolor{PHP_variable}{HTML}{C82210}%C82210
\definecolor{PHP_number}{HTML}{BF1CA6}
\definecolor{PHP_background}{HTML}{F0F0F0}

\usepackage{etoolbox}

\newtoggle{InString}{}% Keep track of if we are within a string
\togglefalse{InString}% Assume not initally in string
\newcommand*{\ColorIfNotInString}[1]{\iftoggle{InString}{#1}{\color{PHP_number}#1}}%
\newcommand{\PHPhighlightvar}[1]{\ifnum\theDollarFlag=1 \color{PHP_variable} \fi#1\setcounter{DollarFlag}{0}}
\newcounter{DollarFlag}

\lstset{
	language        =php,
	basicstyle      =\footnotesize\ttfamily,
	keywordstyle    =\color{PHP_keyword},
	frame           =single,
	rulecolor       ={\color{PHP_default}},
	autogobble      =true
	backgroundcolor ={\color{PHP_background}},
	stringstyle     =\color{PHP_string!90!black}\toggletrue{InString},
	%this allows highlighting of variables:
	literate        = {\$}{{\iftoggle{InString}{\$}{\setcounter{DollarFlag}{1}\color{PHP_variable}\$\color{PHP_default}}}}1
	                  {0}{{{\ColorIfNotInString{0}}}}1
	                  {1}{{{\ColorIfNotInString{1}}}}1
	                  {2}{{{\ColorIfNotInString{2}}}}1
	                  {3}{{{\ColorIfNotInString{3}}}}1
	                  {4}{{{\ColorIfNotInString{4}}}}1
	                  {5}{{{\ColorIfNotInString{5}}}}1
	                  {6}{{{\ColorIfNotInString{6}}}}1
	                  {7}{{{\ColorIfNotInString{7}}}}1
	                  {8}{{{\ColorIfNotInString{8}}}}1
	                  {9}{{{\ColorIfNotInString{9}}}}1,
	identifierstyle  =\color{PHP_default}\PHPhighlightvar,
	commentstyle     =\color{PHP_comment}\slshape,
	emph             =[1]{require_once, require, include_once, include, namespace, use, class, function, new},
	emphstyle        =[1]\color{PHP_emph1},%\bf,
	emph             =[2]{echo, empty, isset, array, instanceof},
	emphstyle        =[2]\color{PHP_emph2},%\bf,
	emph             =[3]{var, const, abstract,
		                    protected, private, public,
		                    static, final, extends, implements,
		                    global, if, else, foreach ,for,
		                    endforeach, endif, endfor, elseif,
		                    as},
	emphstyle        =[3]\color{PHP_keyword},%\bf,
	emph             =[4]{return, throw, exit, __halt_compiler, continue, break},
	emphstyle        =[4]\color{PHP_emph4},%\bf,
	breaklines       =true,
	captionpos       =b,
	rulecolor        =\color{black},
	keywords         ={__halt_compiler,    abstract,   and,    array,
		                 as, break,  callable,   case,   catch,  class,
		                 clone,  const,  continue,   declare,    default,
		                 die,    do, echo,   else,   elseif,
		                 empty,  enddeclare, endfor, endforeach, endif,
		                 endswitch,  endwhile,   eval,   exit,   extends,
		                 final,  finally,    for,    foreach,    function,
		                 global, goto, if,   implements, include,
		                 include_once,   instanceof, insteadof,
		                 interface,  isset, list,    namespace,
		                 new,    or, print, private, protected,  public,
		                 require,    require_once, return,   static,
		                 switch, throw,  trait, try, unset, use, var,
		                 while,  xor,    yield,
	                  },
	numbers          =left,
	stepnumber       =1,
	numberfirstline  =true,
	numberstyle      =\footnotesize,
	xleftmargin      =4.0ex,
	upquote          =true,
	showlines        =true
}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\begin{document}
	
	\lipsum[1]\\
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
	\begin{lstlisting}[language=php]
		private static $affected_rows = 0;
		private static $profile = array();
		
		public static function connect(){
			// config
			$params = Config::get('database');
			
			// set debug mode
			static::$debug = Config::get('debug', false); 
			
			// build dns string
	\end{lstlisting}
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\end{document}