PHP regex doesn't match?
<p>I have the following RegEx</p>

<p><code>@version:\'(?:CKEditor )?([\d\.]+)(?:.+revision:\'([\d]+))?@</code></p>

<p>And it should match</p>

<p><code>version:"4.0 Beta"</code></p>

<p>and return 4.0 Beta</p>

<p>But it doesn't seem to be working? Am I missing something?</p>
