how to COUNT explode imploding data with comma? [duplicate] - php

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Is storing a delimited list in a database column really that bad?
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How to count items in comma separated list MySQL
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I want to count the number of mechanics in a chart, but some data has multiple data which I use with implode (comma). how to separate data?
I'm taking data from one of my tables, where a column has a value that is implode. the problem here, I just want to explode **nama_tmp **(EKO PAMBUDI, MURNO, ARDI PRASETYO) separately so I can count each name.
The following query I use to display the table:
var chart4;
$(document).ready(function() {
chart4 = new Highcharts.Chart({
chart: {
renderTo: 'mygraph4',
type: 'column'
},
title: {
text: 'Grafik Mekanik'
},
xAxis: {
categories: ['Mekanik']
},
yAxis: {
title: {
text: 'Total Perbaikan'
}
},
series:
[
<?php
include "system/koneksi.php";
$sql = "SELECT nama_tmp FROM tb_tmp GROUP by nama_tmp";
$query = mysqli_query($connect, $sql) or die(mysqli_error());
while($temp = mysqli_fetch_array($query))
{
$namatmp=$temp['nama_tmp'];
$sql_total = "SELECT COUNT(nama_tmp) as 'total' from tb_tmp GROUP by nama_tmp = '$namatmp'";
$query_total = mysqli_query($connect,$sql_total) or die(mysql_error());
while($data = mysqli_fetch_array( $query_total))
{
$total = $data['total'];
}
?>
{
name: '<?php echo $namatmp; ?>',
data: [<?php echo $total; ?>]
},
<?php
} ?>
]
});
});
my database:

Answer 1

After looking at the image again, I can understand your problem. You basically need to prepare your data, instead of printing the PDF directly.
You could use a map to calculate your output like so:
$total = array("freq" => 0, "menit" => 0, "jam" => 0);
$groups = array();
while ($data = mysqli_fetch_array($query)) {
$names = explode(",",$data['nama_tmp']);
foreach ($names as $name) {
if (!array_key_exists($name, $groups)) {
$groups[$name] = array("freq" => 0, "menit" => 0, "jam" => 0);
}
$groups[$name]["freq"] += $data["freq"];
$groups[$name]["menit"] += $data["menit"];
$groups[$name]["jam"] += $data["jam"];
$total["freq"] += $data["freq"];
$total["menit"] += $data["menit"];
$total["jam"] += $data["jam"];
}
}
Now you should have all your data in $groups and you can generate your PDF from that.
foreach ($groups as $name => $group) {
$pdf->Ln();
$pdf->Cell(90,5,$name,1,0,'L',0);
$pdf->Cell(20,5,$group['freq'],1,0,'C',0);
$pdf->Cell(25,5,$group['menit'],1,0,'C',0);
$pdf->Cell(25,5,$group['jam'],1,0,'C',0);
}
$pdf->Ln(5);
$pdf->SetFillColor(255, 235, 255);
$pdf->SetFont('times','B',8);
$pdf->Cell(90,5,'TOTAL',1,0,'C',1);
$pdf->Cell(20,5,$total["freq"],1,0,'C',1);
$pdf->Cell(25,5,$total["menit"],1,0,'C',1);
$pdf->Cell(25,5,$total["jam"],1,0,'C',1);
Note: Instead of using a variable for every column sum, I have used a $total map array instead. This makes it more readable. Also you should consider using some functions for each part of your script.
The main function could then be as simple as this:
$data = readData();
$groups= calculateSums($data);
$pdf = generatePDF($groups);