Php 修改用于FLOT图表的JSON数据格式
我试图创建一个JSON对象来保存用于图表的数据。文档中说,数据格式应该是如下所示的点数组:Php 修改用于FLOT图表的JSON数据格式,php,json,flot,Php,Json,Flot,我试图创建一个JSON对象来保存用于图表的数据。文档中说,数据格式应该是如下所示的点数组: [ [1, 3], [2, 14.01], [3.5, 3.14] ] Rate: [96, 74, 73, 96, 124, 104] Year: [2008, 2009, 2010, 2011, 2012, 2013] 我遇到的问题是,我的AJAX调用返回的JSON对象的数据格式如下: [ [1, 3], [2, 14.01], [3.5, 3.14] ] Rate: [96, 74, 73,
[ [1, 3], [2, 14.01], [3.5, 3.14] ]
Rate: [96, 74, 73, 96, 124, 104]
Year: [2008, 2009, 2010, 2011, 2012, 2013]
我遇到的问题是,我的AJAX调用返回的JSON对象的数据格式如下:
[ [1, 3], [2, 14.01], [3.5, 3.14] ]
Rate: [96, 74, 73, 96, 124, 104]
Year: [2008, 2009, 2010, 2011, 2012, 2013]
有人能解释一下我应该如何修改这段代码,以便创建FLOT图表所需的正确数据格式吗?谢谢
function ajaxmuniChart1c(){
$muni = $this->input->POST('muni');
$q = $this->db->query("SELECT SaleYear AS Y, NewSaleType AS T, count(*) AS C, format((sum(SalePrice) / sum(Quantity1)),0) AS R FROM tblsales WHERE tblsales.SaleYear > 2007 AND tblsales.Quantity1 > 2000 AND (tblsales.NewSaleType = 'Industrial') AND tblsales.Municipality = '".$muni."' GROUP BY T,Y ORDER BY T,Y");
$json_SaleYear = array();
$json_AvrgRate = array();
foreach ($q->result_array() as $row){
$json_SaleYear[] = $row['Y'];
$json_AvrgRate[] = $row['R'];
}
$json['Year'] = $json_SaleYear;
$json['Rate'] = $json_AvrgRate;
echo json_encode($json);
exit;
}
在
foreach
results循环期间,将它们放置在PHP数组中的同一行中:
/**
* Bind the two on the
* same row whilst looping
* the results
**/
foreach ( $q->result_array() as $row ){
$JsonArray[] = array( $row['Y'] => $row['R'] );
}
/**
* Expected Array Result:
**/
print_r( $JsonArray );
Array
(
[0] => Array
(
[2008] => 96
)
[1] => Array
(
[2009] => 74
)
/**
* echo this out as an JSON String
**/
echo json_encode( $JsonArray );
这将为您提供:
[{"2008":96},{"2009":74},{"2010":73},{"2011":96},{"2012":124},{"2013":104}]
如文档中所述,您可以为数据提供标签。
要做到这一点,您需要将其推入一个多维数组中,该数组将分支出:
- 标签
- 资料
/**
* Create a new variable
* two join the two
**/
$WithLabels = array(
"label" => "Sales by Years",
"data" => $JsonArray
);
echo json_encode( $WithLabels );
对其进行编码,最终为我们提供以下信息:
{
"label" : "Sales by Years",
"data" : [{"2009":74},
{"2010":73},
{"2011":96},
{"2012":124},
{"2013":104}]
}
在foreach结果循环期间将它们放入PHP数组中
// PHP CODE
$data = array(); // empty array
foreach ($query as $k=>$row) {
$data[] = array($k, $row->total_price); // store data in array
}
echo json_encode($data); // json encode
Ajax对成功的回应
success: function(msg) {
var d1 = msg;
console.log(d1);
$.plot($("#chart_lines_fill_nopoints"), [d1]); //chart_lines_fill_nopoints id name
}
// Data Should be in this format
//array(array(1,300),array(1,1300),array(1,200),array(1,500)); etc
// should be in json result
[[1, 7.8], [2, 7.8], [3, 20.0], [4, 7.8], [5, 7.8]]
就这样@Danielatard更新了我的答案,让我的答案更详细一点=)谢谢你的帮助。非常感谢。很有魅力。还有一个问题要问你。我如何修改您的代码,以便最终得到数据的标签?@Danielatard修改了我的答案,并对How=]进行了一些描述