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HTML 列表中的 PHP 标签（和代码）存在问题

tag-icon • tag-icon listings html php
HTML 列表中的 PHP 标签（和代码）存在问题

我想在同一代码中突出显示 PHP 和 HTML。在尝试过程中，我遇到了三个挑战：

  1. 似乎 listings 将<?php和?>视为一个大 HTML 标签。如何告诉 listings in<不是<?phpHTML 标签？
  2. 变量值（这里是 23 和 42）应该有不同的颜色...由于我在（1）中提到的，似乎<?php和之间的所有代码都?>被视为 HTML。
  3. 变量名...它们应该有自己的颜色。我已经用 修复了这个问题emph，但一定有更好的方法吗？

感谢所有帮助！

致以最诚挚的问候 Lars

\documentclass{article}
\usepackage{color}
\usepackage{listings, textcomp}

\definecolor{codecolor}{cmyk}{0.75,0.4,0,0}
\definecolor{codebg}{cmyk}{0.02,0.02,0.02,0.02}
\definecolor{codenumber}{cmyk}{0.2,0.1,0.1,0.2}
\definecolor{codecomment}{cmyk}{0.6,0,1,0}
\definecolor{codestring}{cmyk}{0,1,1,0}

\lstdefinelanguage{myhtml} {
  language = HTML,
  morecomment = [s]{<!--}{-->},
  morecomment = [l]{-->},
  otherkeywords = {=, href, target, alt, controls, action, method, src, width, height, type, class}
}

\lstdefinestyle{customphp}{
  captionpos = b,
  breaklines = true,
  breakatwhitespace = true;
  xleftmargin = \parindent,
  language = PHP,
  alsolanguage = myhtml,
  upquote = true,
  showstringspaces = false,
  numbers = left,
  basicstyle = \footnotesize\ttfamily\color{black},
  commentstyle = \color{codecomment},
  keywordstyle = \color{codecolor},
  numberstyle = \tiny\color{codenumber},
  stringstyle = \color{codestring}, 
  backgroundcolor = \color{codebg},
  tagstyle = \color{codecolor},
  emph = {$number},
  emphstyle = {\color{green}}
}

\begin{document}

\begin{lstlisting}[style=customphp]
<!doctype html>
<html>
<head>
    <title> My first PHP document </title>
</head>
<body>

<h1> Welcome to my first PHP document! </h1>

<?php
  $number = 23;
  echo "Our number is $number. <br>";

  $number = 42;
  echo "Our number is now $number. <br>";
?>

<p> Some text... </p> 

<?php
  echo "Some text... <br>";
  echo "Our variable is still accessible, our number is $number.";
?>

</body>
</html>
\end{lstlisting}

\end{document}

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