我尝试使用json检索结果,以便显示带有国家/地区列表的世界地图。
这是我到目前为止所得到的:
function drawRegionsMap() {
$.ajax({
url: 'getlist.php",
dataType: "json"
}).done(function(result) {
var data = google.visualization.arrayToDataTable(result);
var view = new google.visualization.DataView(data)
view.setColumns([0, 1])
var chart = new google.visualization.GeoChart(
document.getElementById('map'));
chart.draw(data, options);
var geochart = new google.visualization.GeoChart(
document.getElementById('map'));
var options = {
width: "auto",
height: "auto",
colorAxis: {
colors: ['#E4B6D3', '#E06D94']
} // Map Colors
};
geochart.draw(data, options);
});
};
google.load('visualization', '1', {
'packages': ['geochart']
});
google.setOnLoadCallback(drawRegionsMap);
从getlist.php返回的结果是json格式:
{
"Country":[
"Germany",
"United States",
"Brazil",
"France",
"RU"
],
"Hits":[
200,
300,
400,
500,
600,
700
]
}
php代码:
$data = array();
$data['Country'] = array();
$data['Hits'] = array();
$country = array('Germany','United States','Brazil','France','RU');
$hits = array(200,300,400,500,600,700);
for ($i = 0; $i < 6; $i++){
$data['Country'] = $country;
$data['Hits'] = $hits;
}
echo json_encode($data);
在firebug控制台中查看,我总是得到:错误:不是数组 我已经试图解决这个难题几个小时,但没有成功。
答案 0 :(得分:0)
返回的结果是一个对象,而不是一个数组。
预期的数组是:
[
["Country","Hits"],
["Germany",200],
["United States",300],
["Brazil",400],
["France",500],
["RU",600]
]
修改返回此数组的PHP代码:
<?php
$data = array(['Country','Hits']);
$country = array('Germany','United States','Brazil','France','RU');
$hits = array(200,300,400,500,600,700);
foreach ($country as $k => $v){
$data[] = array($v,$hits[$k]);
}
echo json_encode($data);
?>