The first thing I get values from database with no problem. Then I can echo the values but after The values turn in to null. Somehow the values do not pass this point. Here are my codes.
php and mysql part
$rows = array();
$result = mysql_query("SELECT * FROM kayitlar");
$i=1;
while($row = mysql_fetch_array($result)) {
$rows []= array(
'id' => $row['id'],
'ad' => $row['ad'],
'saat' => $row['saat'],
);
$i++;
}
No problem till this point. Here is the rest of the code that I am having problem
<script type="text/javascript">
window.onload = function () {
var chart = new CanvasJS.Chart("chartContainer",
{
title:{
text: "title"
},
animationEnabled: true,
axisY: {
title: "Zaman (saat)"
},
legend: {
verticalAlign: "bottom",
horizontalAlign: "center"
},
theme: "theme2",
data: [
{
type: "column",
showInLegend: true,
legendMarkerColor: "grey",
legendText: "saat",
dataPoints: [
{y:<?php echo json_encode($row['ad']); ?>, label: "<?php echo json_encode($row['saat']); ?> "},
]
}
]
});
chart.render();
}
</script>
here where I stuck <?php echo json_encode($row['ad']); ?> is getting no value
Your $rows array indexed array which contain your keys in every index. So you need to extract your keys value pair from array.
After your while loop completed, add following codes
$arr['ad'] = array_column($rows,"ad");
$arr['saat'] = array_column($rows,"saat");
$arr['id'] = array_column($rows,"id");
Now use this in your jS
<script type="text/javascript">
window.onload = function () {
var chart = new CanvasJS.Chart("chartContainer",
{
title:{
text: "title"
},
animationEnabled: true,
axisY: {
title: "Zaman (saat)"
},
legend: {
verticalAlign: "bottom",
horizontalAlign: "center"
},
theme: "theme2",
data: [
{
type: "column",
showInLegend: true,
legendMarkerColor: "grey",
legendText: "saat",
dataPoints: [
{y:<?php echo json_encode($arr['ad']); ?>, label: "<?php echo json_encode($arr['saat']); ?> "},
]
}
]
});
chart.render();
}
</script>
Your array is multidimensional array so simple use array_column to get specific column value from each index and apply json_encode()
<?php echo json_encode(array_column($rows,'ad')); ?>
<?php echo json_encode(array_column($rows,'saat')); ?>
Related
My table(tb_ticket) which like this :
technician_1
Technician_2
Ema
Ema
Tom
Ema
Lisa
Tom
Ana
Lisa
Tom
Tom
My question is how to make it like this :
Ema=3, Tom=4, Ana=1, Lisa=2
My query
<script>
var ctx = document.getElementById("myChart").getContext('2d');
var myChart = new Chart(ctx, {
type: 'bar',
data: {
labels: ["Ema", "Tom", "Ana", "Lisa"],
datasets: [{
label: 'Request by technician',
data: [
<?php
$technician_ema= mysqli_query($koneksi,"select * from tb_ticket where (technician_1','technician_2)='Ema'");
echo mysqli_num_rows($technician_ema);
?>,
<?php
$technician_tom= mysqli_query($koneksi,"select * from tb_ticket where (technician_1','technician_2)='Tom'");
echo mysqli_num_rows($technician_tom);
?>,
<?php
$technician_ana= mysqli_query($koneksi,"select * from tb_ticket where (technician_1','technician_2)='Ana'");
echo mysqli_num_rows($technician_ana);
?>,
<?php
$technician_lisa= mysqli_query($koneksi,"select * from tb_ticket where (technician_1','technician_2)='Lisa'");
echo mysqli_num_rows($technician_lisa);
?>
],
backgroundColor: [
'#1B4F72',
'#21618C',
'#2874A6',
'#2E86C1'
],
}]
},
options: {
scales: {
xAxes: [{
ticks: {
autoSkip: false
}
}]
}
}
});
</script>
Combine the total number of technicians from column technician_1 and technicians_2 into a bar chart.
My chart like this
Solved.
change the code below.
<?php
$technician_lisa= mysqli_query($koneksi,"select * from tb_ticket where technician_1='lisa' or technician_2='Lisa'");
echo mysqli_num_rows($technician_lisa);
?>
I create a chart using canvasjs. Values display in chart is from mysql database. All working but the problem is, it showing just 1 line on chart (sensors_pres) from table SensorData on chart not all three sensors_pres, sensors_temperature_data and sensors_humidity.
Other problem is on range slider is not showing hour from 0 to 24, test it. Click in left-up on button all and in right-up you will see the number -1 to 96. How can i solve?
I opened data.php file with browser and all values working correct.
Here is my html&javascript code
<!DOCTYPE HTML>
<html>
<head>
<script type="text/javascript" src="https://canvasjs.com/assets/script/jquery-1.11.1.min.js"></script>
<script type="text/javascript" src="https://canvasjs.com/assets/script/canvasjs.stock.min.js"></script>
<script type="text/javascript">
window.onload = function () {
$.getJSON("data.php", function (result) {
var stockChart = new CanvasJS.StockChart("chartContainer",{
title:{
text:"StockChart with Numeric Axis"
},
animationEnabled: true,
exportEnabled: true,
charts: [{
axisX: {
crosshair: {
enabled: true,
snapToDataPoint: true
}
},
axisY: {
crosshair: {
enabled: true,
//snapToDataPoint: true
}
},
data: [{
type: "line",
dataPoints: result
}]
}],
rangeSelector: {
inputFields: {
startValue: 00,
endValue: 24,
valueFormatString: "###0"
},
buttons: [{
label: "00",
range: 00,
rangeType: "number"
},{
label: "12",
range: 12,
rangeType: "number"
},{
label: "24",
range: 24,
rangeType: "number"
},{
label: "All",
rangeType: "all"
}]
}
});
stockChart.render();
})
}
</script>
</head>
<body>
<div id="chartContainer" style="height: 450px; width: 100%;"></div>
</body>
</html>
here is my php code:
<?php
header('Content-Type: application/json');
$con = mysqli_connect("fdb30.awardspace.net","3758712_lnd","bogdanutzu97","3758712_lnd");
// Check connection
if (mysqli_connect_errno($con))
{
echo "Failed to connect to DataBase: " . mysqli_connect_error();
}else
{
$data_points = array();
$result = mysqli_query($con, "SELECT * FROM SensorData");
while($row = mysqli_fetch_array($result))
{
$point = array("label" => $row['reading_time'] , "y" => $row['sensors_pres'],$row['sensors_temperature_data'],$row['sensors_humidity']);
array_push($data_points, $point);
}
echo json_encode($data_points, JSON_NUMERIC_CHECK);
}
mysqli_close($con);
?>
data: [
{
type: "line",
dataPoints: result1
},
{
type: "line",
dataPoints: result2
},
{
type: "line",
dataPoints: result3
}
]
In your data section add 2 more data sets
I am Trying to make a HighChart's Line Chart Based on the data from the Database.
I Fetched the Data from The Database as I can see that data in the console .
The php Code I Used is :
<?php
$query = "
SELECT YEAR(created_at) AS year,
MONTHNAME(created_at) AS month,
COUNT(*) AS count
FROM users
GROUP BY month ASC ORDER BY created_at ASC
" ;
$result = mysqli_query($conn, $query) ;
while ($row = mysqli_fetch_assoc($result)) {
$data1[] = $row['month'];
$data2[] = $row['count'];
}
?>
Now I Fetched the Data in Highchart's script as Follows :
<script type="text/javascript">
$(function () {
$('#container').highcharts({
chart: {
type: 'line',
},
title: {
text: 'Download Trends'
},
credits: {
enabled: false
},
xAxis: {
categories: ['<?php echo join($data1, "','"); ?>'],
},
yAxis: {
min: 0,
title: {
text: 'No. of Downloads'
}
},
plotOptions: {
column: {
pointPadding: 0.2,
borderWidth: 0
}
},
series: [{
name: 'Qty',
data: ['<?php echo join($data2, "','"); ?>'],
}]
});
});
</script>
I using the container div with id container as follows :
<div id="container"></div>
The Problem is that the data is not showing in correct Manner . its been showing only half of the data as you can see below :
its not showing the Line.
Please Help
Your data serie is made of strings, and Highcharts works with numbers for this kind of graph.
Remove the simple quotes in the data section and it should works :
data: [<?php echo join($data2, ","); ?>]
I want to create two charts with CanvasJS in which I use values from php file.
I have two charts but only one renders, the second one has only white background and title text.
Here's php code with values:
<?php
require 'excCon.php';
$dataPoints = array(
array("y" => $excel_result, "label" => "Quantity"),
array("y" => $excel_result2, "label" => "Value"),
);
$dataP = array(
array("y" => $excel_result3, "name" => "1", "exploded" => false),
array("y" => $excel_result4, "name" => "2"),
array("y" => $excel_result5, "name" => "3&5"),
array("y" => $excel_result6, "name" => "4"),
);
?>
and javascript:
<div id="chartContainer style="height: 400px;width: 80%"">
<script type="text/javascript">
$(function () {
var chart1 = new CanvasJS.Chart("chartContainer", {
theme: "theme2",
animationEnabled: true,
title: {
text: "Sum"
},
data: [
{
type: "column",
dataPoints: <?php echo json_encode($dataPoints, JSON_NUMERIC_CHECK); ?>
}
]
});
chart1.render();
});
</script>
</div>
<div id="chartContainer2" style="height: 400px;width: 80%">
<script type="text/javascript">
$(function () {
var chart2 = new CanvasJS.Chart("chartContainer2",
{
theme: "theme2",
title:{
text: "All"
},
exportFileName: "All",
exportEnabled: false,
animationEnabled: false,
data: [
{
type: "pie",
showInLegend: true,
toolTipContent: "{name}: <strong>{y}%</strong>",
indexLabel: "{name} {y}%",
dataP: <?php echo json_encode($dataP, JSON_NUMERIC_CHECK); ?>
}]
});
chart2.render();
});
</script>
</div>
The whole code is in index.php file.
For the record, I searched other solutions here as well as on the official page and none worked.
Solution is to have dataPoints in data and do not change it
data: [
{
type: "column",
**dataPoints** : <?php echo json_encode($dataP, JSON_NUMERIC_CHECK); ?>
Im new in Js and Jquery and I have a curiosity about the Jquery Chart that is free to download and I want to make the data inside to be coming from the database to make it dynamic but somehow I find it difficult to loop it in.
here is my sample code, I used PHP to get the database and pass it on a JS variable
<!DOCTYPE HTML>
<html>
<head>
<?php
$link = mysqli_connect("localhost","root","","raksquad_centralized") or die("Error " . mysqli_error($link));
if($link->connect_error){
printf("Connect failed: %s\n", $mysqli->connect_error);
exit();
}
$query = "SELECT * FROM raksquad_centralized.grade";
$result = $link->query($query);
$subject_id= array();
$genAve = array();
while($row = mysqli_fetch_array($result)){
$subject_id[] = $row['subject_id'];
$genAve[]= $row['gen_ave'];
}
?>
<script type="text/javascript">
window.onload = function () {
var DataXAxis = <?php echo json_encode($subject_id); ?>; // X axis that corresponds to students
var DataYAxis = <?php echo json_encode($genAve); ?>; // Y axis that corresponds to grades
var chart = new CanvasJS.Chart("chartContainer",
{
title:{
text: "Top Students"
},
animationEnabled: true,
axisY: {
title: "Grades"
},
axisX: {
title: "Students"
},
legend: {
verticalAlign: "bottom",
horizontalAlign: "center"
},
theme: "theme2",
data: [
{
type: "column",
showInLegend: true,
legendMarkerColor: "grey",
legendText: "General Average",
dataPoints: [
//the area to loop with the value of DataXAxis, DataYAxis
{y: 98, label: "MT1234" },
{y: 72, label: "MT1236"} //corresponds to the barcharts
]
}
]
});
chart.render();
}
</script>
<script type="text/javascript" src="./canvasjs.min.js"></script>
</head>
<body>
<div id="chartContainer" style="height: 300px; width: 100%;">
</div>
</body>
</html>
appreciate for the help, useful for learning :)
I just use a php code to fetch the data, then json encode it.
On the script use json parse