Replace multi UTF-8 chars with one same acs ii char by preg_replace()
<p>I have to convert a UTF-8 string to non UTF-8 string, I want to replace:</p>

<p><strong>Ậ,Ẫ,Ẩ,Ầ,Ấ,Â,Ặ,Ẵ,Ẳ,Ằ,Ắ,Ă,Ạ,Ã,Ả,À,Á</strong> to <strong>A</strong>,</p>

<p><strong>Ự,Ữ,Ử,Ừ,Ứ,Ư,Ụ,Ũ,Ủ,Ù,Ú</strong> to <strong>U</strong>,</p>

<p><strong>Ợ,Ỡ,Ở,Ờ,Ớ,Ơ,Ộ,Ỗ,Ổ,Ồ,Ố,Ô,Ọ,Õ,Ỏ,Ò,Ó</strong> to <strong>O</strong>... and much more with same case</p>

<p>By php <code>preg_replace()</code> ?</p>

<p>May I use ?:</p>

<pre><code>$string = preg_replace('/Ậ,Ẫ,Ẩ,Ầ,Ấ,Â,Ặ,Ẵ,Ẳ,Ằ,Ắ,Ă,Ạ,Ã,Ả,À,Á/', 'A', $string);
$string = preg_replace('/Ợ,Ỡ,Ở,Ờ,Ớ,Ơ,Ộ,Ỗ,Ổ,Ồ,Ố,Ô,Ọ,Õ,Ỏ,Ò,Ó/', 'O', $string);
$string = preg_replace('/Ự,Ữ,Ử,Ừ,Ứ,Ư,Ụ,Ũ,Ủ,Ù,Ú/', 'U', $string);
</code></pre>
