仅在<code> </ code>之间匹配所有选项卡

Question

Sample Text

    Hello
    World

<pre><code>&lt;VirtualHost *:80&gt;
    ServerAdmin [e-mail]
    DocumentRoot &quot;C:\wamp\www\abc\public&quot;
    ServerName abc.local
    ErrorLog &quot;logs/abc.local-error.log&quot;
    CustomLog &quot;logs/abc.local-access.log&quot; common
&lt;/VirtualHost&gt;
</code></pre>

<pre><code>&lt;VirtualHost *:80&gt;
    ServerAdmin [e-mail]
    DocumentRoot &quot;C:\wamp\www\abc\public&quot;
    ServerName abc.local
    ErrorLog &quot;logs/abc.local-error.log&quot;
    CustomLog &quot;logs/abc.local-access.log&quot; common
&lt;/VirtualHost&gt;
</code></pre>

    Hello
    World

I would like to match all tabs only between <code></code>, I have tried using /(<code>)*([\t])+/g, but it still matches all tabs (everywhere), I intend to replace those tabs with 2 spaces later

Please guide or hint me with some regex, thanks

Answer 1

Try this, First match anything between code

$txt='<code>test</code>';

  $re1='(<code>)';  # Tag 1
  $re2='.*?';   # Non-greedy match on filler
  $re3='(<\\/code>)';   # Tag 2

  if ($c=preg_match_all ("/".$re1.$re2.$re3."/is", $txt, $matches))
  {
      $tag1=$matches[1][0];
      $tag2=$matches[2][0];
      print "($tag1) ($tag2) 
";
  }

Then on this result, use your reg expression