帝国CMS 批量拆分标题为单个字写入到指定字段

$sqlb=$empire->query("select * from {$dbtbpre}ecms_zaoju where feilei<>'英语造句'");
while($r=$empire->fetch($sqlb)){
$input=$r['title'];
$input=str_replace(',','',$input);
$count=mb_strlen($input,'utf-8'); //按照utf-8字符计数
$output='';
for($i=0;$i<$count;$i++){
	$cnchar=mb_substr($input,$i,1,'utf-8'); //分离出一个需要处理的字符 
	$output.=$cnchar.',';
}
$cz=rtrim($output,",");
$empire->query("update {$dbtbpre}ecms_zaoju set cizu='$cz' where id='$r[id]'");