[Vlasenko Fedor]

<style>
    pre {
      white-space:normal;
    }
  </style>
    <pre>"&lt;?php
      <span style="color:#00F">$var</span>=
      <span style="color:#F00">&quot;string&quot;</span>;
      <span style="color:#00F">$str</span>=
      <span style="color:#F00">&quot;&lt;str&gt;&quot;</span>; ?&gt; "</pre>

вы про white-space?