php - Flot pie chart get data from database -

hi trying retrieve data mysql database create flot pie, i've data looks this

data in array

$array = array();

$array[0] = array(); $array[1] = array(); $array[2] = array();

$array[0]['label'] = 'grade a'; $array[1]['label'] = 'grade b'; $array[2]['label'] = 'grade c';

$array[0]['color'] = '#89a54e'; $array[1]['color'] = '#aa4643'; $array[2]['color'] = '#4572a7';

$array[0]['data'][0] = array(1,700); $array[1]['data'][0] = array(1,500); $array[2]['data'][0] = array(1,600);

echo json_encode($array);

and mysql

$server = "localhost"; $user="root"; $password=""; $database = "db_test";  $connection = mysql_connect($server,$user,$password); $db = mysql_select_db($database,$connection);  $query = "select * pie"; $result = mysql_query($query);          while ($record = mysql_fetch_assoc($result)) {     $event_array[] = array(         'label' => $record['label'],         'color' => $record['color'],         'data' => $record['data']     ); }  echo json_encode($event_array); 

my flot js

    $.ajax ({     type:'post',      datatype: 'json',      url:'data.php',     success: function(data)      {             $.plot($('#pie'), data,          {             series:              {                 pie:                  {                     show: true,                     innerradius: 0.4,                     radius: 1,                     label: {                         show: true,                         radius: 1,                         formatter: function(label, series)                          {                             return "<div style='font-size:11px; text-align:center; padding:2px; color:white;'>"+label+"<br/>"                             +math.round(series.percent)+"%</div>";                         },                          background:                          {                             opacity: 0.8                         }                     }                 }             },              grid:              {                 hoverable: true             },              legend:              {                 show: false             }         });     } }); 

it won't display anything, can me.