clean text string
<p>I need to remove everything (parentheses, punctuation, etc), using PHP, from a text string and leave just text. </p>

<p>Someone suggested this:</p>

<pre><code>$str= trim(preg_replace('/\s*\([^)]*\)/', '', $str));
</code></pre>

<p>Also, if there are words like: <strong>Bob's</strong> it needs to be cleaned to <strong>Bob</strong>. I also do not need any numbers, just words separated by commas.</p>
