How do I get css syntax highlighting while editing a php file?
<p>How do I setup my .vimrc to have syntax highlighting for a region of PHP code that contains css?</p>

<p>Example:</p>

<pre><code>&lt;?php

$string = &lt;&lt;&lt;css
a { color:blue; background:white;}
css;
</code></pre>

<p>Is there a vim plugin or do I need to update my .vimrc?</p>