jqgrid显示不了数据解决方案

include_once ("connect.php");

	$page = $_GET['page'];
		$limit = $_GET['rows'];
		$sidx = $_GET['sidx'];
		$sord = $_GET['sord'];
		if (!$sidx)
			$sidx = 1;
        $where = '';
        $title = uniDecode($_GET['title'],'utf-8');
        if(!empty($title))
            $where .= " and title like '%".$title."%'";
        $sn = uniDecode($_GET['sn'],'utf-8');
        if(!empty($sn))
            $where .= " and sn='$sn'";

		$result = mysql_query("SELECT COUNT(*) AS count FROM products where deleted=0".$where);
		$row = mysql_fetch_array($result, MYSQL_ASSOC);
		$count = $row['count'];
		//echo $count;
		if ($count > 0) {
			$total_pages = ceil($count / $limit);
		} else {
			$total_pages = 0;
		}
		if ($page > $total_pages)
			$page = $total_pages;
		$start = $limit * $page - $limit;
		if ($start<0) $start = 0;
		$SQL = "SELECT * FROM products WHERE deleted=0".$where." ORDER BY $sidx $sord LIMIT $start , $limit";
		$result = mysql_query($SQL) or die("Couldn t execute query." . mysql_error());

		$responce->page = $page;
		$responce->total = $total_pages;
		$responce->records = $count;
		$i = 0;
		while ($row = mysql_fetch_array($result, MYSQL_ASSOC)) {
			$responce->rows[$i]['id'] = $row[id];
			$opt = "修改";
			$responce->rows[$i]['cell'] = array (
				$row['sn'],
				$row['title'],
				$row['size'],
				$row['os'],
				$row['charge'],
				$row['price'],
				$opt
			);
			$i++;
		}
		//print_r($responce);
		echo json_encode($responce);
		
	
		
		
	function uniDecode($str, $charcode) {
	$text = preg_replace_callback("/%u[0-9A-Za-z]{4}/", toUtf8, $str);