自动刷新Highchart

Question

刷新样条线Highchart，我不明白我做错了什么。我的代码是这样的：

(function($){
    $(this.document).ready(function(){
        //get local time
        Highcharts.setOptions({
    global: {
        useUTC: false
    }
});
        var myChart = new Highcharts.Chart({

     chart: {
         type: 'spline',
         //animation: Highcharts.svg, // don't animate in old IE
         marginRight: 10,
         renderTo: 'mychart',
         zoomType: 'x',
           events: {
                load: function () {

                    // set up the updating of the chart each second
                    var series = this.series[0];
                    setInterval(function () {
                        var x = <?php echo strtotime($starttime)*1000;?>, // current time
                            y = 0;
                        series.addPoint([x, y], true, true);
                    }, 2000);
                }
            }
    },
    xAxis: {
        type: 'datetime',
        tickPixelInterval: 150,
        min: <?php echo strtotime($starttime) * 1000; ?>,
        max: <?php echo strtotime($end) * 1000; ?>,
         //min: Date.UTC(2015,5,22),
        //max: Date.UTC(2013,4,23),
    },
      yAxis: [{
            min: 0,
            title: {
                text: 'Data Volume (KB)'
            },

        }], 
        tooltip: {
            formatter: function () {
                return '<b>' + this.series.name + '</b><br/>' +
                    Highcharts.dateFormat('%Y-%m-%d %H:%M:%S', this.x) + '<br/>' +
                    Highcharts.numberFormat(this.y, 2);
            }
        }, 
       title: {
            text: 'User Traffic'
        },
    series: [{
        name:'Hourly traffic',
        data:[<?php echo join(',',$traff); ?>],

        //pointStart: Date.UTC(15, 05, 15),
       // pointInterval: 24 * 3600  // one day
    }]
});

});
})(jQuery);

我的系列看起来像这样：

[1432034700000, 95.23],[1434034700000, 65.2],[1435034700000, 40.23] etc

我认为我在setInterval中做错了什么。我没有以正确的形式或类似的方式解析数据。我也不熟悉语法。如果有人可以提供帮助，我会非常感激。 Thanx提前！