有没有人用过google chart api 折线图，把php里的数组放到js里显示折线图
$json =json_encode($myData['CourseInfo']);
?>
<script type="text/javascript" src="https://www.google.com/jsapi"></script>
<script type="text/javascript"><br> google.load("visualization", "1", {packages:["corechart"]});<br> google.setOnLoadCallback(drawChart);<br> function drawChart() {<br> var json = <?php echo $json?>;<br> var data = new google.visualization.DataTable();<br> data.addColumn('string', 'day');<br> data.addColumn('number', '长期数量');<br> data.addColumn('number', '非长期数量');<br> var cnt = json.length;<br><br> var arr=new Array();<br> for(i=0;i<cnt;i++){<br> var j='\''+json[i]['tdate']+'\'';<br> var x = json[i]['coulong'];<br> var y = json[i]['coulongun'];<br> arr[i] = '[' + j + ',' +x+','+ y+']';<br> }<br> alert(arr);弹出（['2012-03-27',0,119],['2012-03-26',0,335],['2012-03-25',0,539],['2012-03-24',0,534],['2012-03-23',0,344],['2012-03-22',0,335],['2012-03-21',0,343],['2012-03-20',0,301]）<br> date.addRows([arr]);这样折线图不会显示出来<br>// data.addRows([<br>// ['2012-03-27',0,119],['2012-03-26',0,335],['2012-03-25',0,539],['2012-03-24',0,534],['2012-03-23',0,344],['2012-03-22',0,335],['2012-03-21',0,343],['2012-03-20',0,301]<br>// ]);这样折线图会显示出来<br> var options = {<br> title: '监控'<br> };<br><br> var chart = new google.visualization.LineChart(document.getElementById('chart_div'));<br> chart.draw(data, options);<br> }<br> </script>
我是把php数组转为json数据，把json数据放到data.addRows（[]）这里，但是不显示，求解
------解决方案--------------------
给你发过去了，看看吧
