php将数据库查询结果转换为json格式

<?phpinclude_once 'DB_connmssql.php';header("Content-Type:text/html;charset=utf-8");		$sql_initbest="		select outdate,SUM(nb*endprice) sales from BI_salewhere endprice<>0group by outdate";		$query = mssql_query($sql_initbest);				while($row=mssql_fetch_array($query)){					array_push($result["data"] , $row);		}							echo json_encode($result);		?>

<?phpinclude_once 'DB_connmssql172.php';header("Content-Type:text/html;charset=utf-8");		$sql_initbest="		select outdate,SUM(nb*endprice) sales from BI_salewhere endprice<>0group by outdate";				$query = mssql_query($sql_initbest);		$items=array();		echo "{	'data':";		while($row=mssql_fetch_array($query)){		echo "[".strtotime($row["outdate"]).",".$row["sales"]."],\n";		}		echo "]}";	?>

while($row=mssql_fetch_array($query)){    $result["data"][] = array(  strtotime($row["outdate"]).'000', $row["sales"] );}echo json_encode($result);

$arr = array(	'data' => array(		array('1161043200000,74.29'),		array('1161043200001,74.53'),		array('1161043200002,78.99'),		array('1161043200003,79.95')	));echo json_encode($arr);

while($row=mssql_fetch_array($query)){    $result["data"][] = array(  strtotime($row["outdate"]).'000', $row["sales"] );}echo json_encode($result);

while($row=mssql_fetch_array($query)){    $result["data"][] = array(  floatval(strtotime($row["outdate"]).'000'), floatval($row["sales"]) );}echo json_encode($result);

		while($row=mssql_fetch_array($query)){			$result["data"][] = array(  strtotime($row["outdate"]).'000', ceil($row['sales']) );		}		echo json_encode($result);