JSON data not showing in highstock candlestick chart using PHP and SQL
Question
I'm trying to display a highstock candlestick chart , but I can't achieve it. My website shows a blank where the chart should be, but there's nothing showing in the chart. How can I fix it to show the chart?
I have two scripts:
datachart.inc.php:
<?php
include '../dbh.php'; //It connects to the database
$sql = "SELECT * from table";
$result = $conn->query($sql);
$row = mysqli_fetch_array($result);
$data = array();
$count = 0;
while ($row=mysql_fetch_array($result))
{
$newdate = strtotime($row['date']) * 1000;
$data[] = array($newdate, (float)$row['open'], (float)$row['high'],
(float)$row['low'], (float)$row['close']);
$count++;
}
echo json_encode($data);
?>
index.htm:
<!DOCTYPE HTML>
<HTML>
<BODY>
<script>
$(function() {
$.getJSON('datachart.inc.php', function(data) {
// create the chart
chart = new Highcharts.StockChart({
chart : {
renderTo : 'container',
},
rangeSelector : {
selected : 1
},
title : {
text : 'Test Price'
},
series : [{
type : 'candlestick',
name : '',
data : data,
tooltip: {
valueDecimals: 2
},
dataGrouping : {
units : [
['week', // unit name
[1] // allowed multiples
], [
'month',
[1, 2, 3, 4, 6]]
]
}
}]
});
});
});
</script>
<div id="container" style="height: 250px; min-width: 250px"></div>
</BODY>
</HTML>
Click here to see a picture of my sql table
1 answers
solution1
0 ACCPTED 2019-04-28 19:11:15
Solved:
1) Import the javascript files
2) Remove "$row = mysqli_fetch_array($result);"
3) Change "while ($row=mysql_fetch_array($result))" to "while ($row=mysqli_fetch_array($result))"
The technical post webpages of this site follow the CC BY-SA 4.0 protocol. If you need to reprint, please indicate the site URL or the original address.Any question please contact:yoyou2525@163.com.