$j=0; $l=0; $res=[];
if (isset($_POST['submit'])) {
    $id=$_POST['text'];
    $t=rtrim($id);
    $word=explode(" ",$t);
    $count=count($word);
    for ($i = 0; $i <$count ; $i++) {
        $query=mysql_query("SELECT * FROM school WHERE roman='$word[$i]' OR roman1='$word[$i]' OR roman2='$word[$i]' LIMIT 1");
        if (mysql_num_rows($query) > 0) {
            while($r=mysql_fetch_assoc($query)) {
                $re=$re.$r['arabic'] . '&nbsp;'; $res[$j]=$r['arabic'];
            }
        } else {
            $re=$re.$word[$i].'&nbsp;';
            $res[$j]=mb_convert_encoding($word[$i], "UTF-8");
        }
        $j++;