Highcharts with data from mysql database - php

Question

I'm using highcharts plugin to print stats in a codeigniter site.
Now I get the data from my database I manage it but when I print it inside highcharts nothing is printed.
This is my php code:
$arr_point = array();
$check_price = array();
for($i = 1; $i <= 12; $i++){
$sum = 0;
$this->load->model('backend/Notification_model');
$this->db->select('*,');
$this->db->from('booking');
$query = $this->db->get();
foreach ($query->result() as $row){
$sum+=(float)$row->total_with_markup;
}
$arr_point[] = str_replace(',', '.', $sum);
}
$result = array();
array_push($result,$arr_point);
return(json_encode($result));
and this is my highchart configuration:
$('#container').highcharts({
chart: {
type: 'column'
},
title: {
text: $('#riepilogo option:selected').text()
},
subtitle: {
text: ''
},
xAxis: {
categories: [
'Jan',
'Feb',
'Mar',
'Apr',
'May',
'Jun',
'Jul',
'Aug',
'Sep',
'Oct',
'Nov',
'Dec'
]
},
yAxis: {
min: 0,
title: {
text: 'Euro'
}
},
tooltip: {
headerFormat: '<span style="font-size:10px">{point.key}</span><table>',
pointFormat: '<tr><td style="color:{series.color};padding:0">{series.name}: </td>' +
'<td style="padding:0"><b>{point.y:.2f} euro</b></td></tr>',
footerFormat: '</table>',
shared: true,
useHTML: true
},
plotOptions: {
column: {
pointPadding: 0.2,
borderWidth: 0
}
},
series: [ {
name: $('#riepilogo options:selected').text(),
data: "<?php echo json_decode($data_chart); ?>"
}]
});
});
if I print json_decode($data_chart) I get this:
Array
if I print ($data_chart I get this:
[["0","297.23","74.41","65.57","2167.32","7649.77","2058.05","146.95","92.55","0","1754.72","0"]]
I have try to not use json_encode, to use json_decode, nothing. Can someone help me? Thanks

Answer 1

The problem is that you create an array in your script:
$arr_point = array();
Try returning just the array and delete:
$result = array();
array_push($result,$arr_point);
and return $array_point;
Or try:
$arr_point = "";
$check_price = array();
for ($i = 1; $i <= 12; $i++) {
$sum = 0;
$this->load->model('backend/Notification_model');
$this->db->select('*,');
$this->db->from('booking');
$query = $this->db->get();
foreach ($query->result() as $row) {
$sum+=(float) $row->total_with_markup;
}
if($arr_point == ""){
$arr_point .= "[";
}
if($arr_point != ""){
$arr_poin .= ",";
}
$arr_point .= str_replace(',', '.', $sum);
}
$arr_point .= "]";
return $arr_point;

Answer 2

Your code contains many injections, so I advice to print json inside your php file like:
echo json_encode($arr, JSON_NUMERIC_CHECK);
Then in javascript call $.getJSON() function and use it in highcahrts, skipping decoding / missing types of data.