title: Error of querying on CodeIgniter using REGEXP with [[:<:]] [[:>:]]
body: <p>I got a problem when I querying data on CodeIgniter using <code>REGEXP</code> with <code>[[:&lt;:]]</code>and<code>[[:&gt;:]]</code>.</p>
  
  <p>The system keep adding the space character on the front and the back of the less-than sign.</p>
  
  <p>For example:</p>
  
  <pre><code>$this-&gt;db-&gt;get_where('news', array("News_Tag REGEXP BINARY "=&gt;"[[:&lt;:]]data[[:&gt;:]]"));
  </code></pre>
  
  <p>will become:</p>
  
  <pre><code>SELECT * FROM `web_news` WHERE `News_Tag` REGEXP BINARY '[[: &lt; :]]data[[:&gt;:]]'
  </code></pre>
  
  <p>and cause the error.</p>
  
  <p>How can I fix this?</p>