Bu deneyin:
$pattern = '/[\x{ff0c},]/u';
//$string = "something here ; and there, oh,that's all!";
$string = 'hei,nihao,a ';
echo '<pre>', print_r( preg_split( $pattern, $string ), 1 ), '</pre>';
exit();
çıktı:
<pre>Array
(
[0] => hei,nihao,a
)
</pre>