Eliminating duplicate specific rows? - php

Question

Please Help!! I just want to display the Barangay which is talojongon with no other duplicate values
Let's say my current output is:
| Barangay | Disease |
__________________________________
| Talojongon | Cancer |
| Talojongon | Cancer |
| Talojongon | Cancer |
and i want to turn this to:
| Barangay | Disease |
__________________________________
| Talojongon | Cancer |
| | Cancer |
| | Cancer |
The receive in the database is for disease and status in the database is the barangay...thank you...Any suggestions is appreciated ..:)
This is my current part of my code
<br>
<table id="keywords" class="table table-striped table-bordered">
<thead>
<tr>
<th><center>Barangay</th></center>
<th><center>Diseases</th></center>
</tr>
</thead>
<tbody>
<?php
include 'database.php';
$pdo = Database::connect();
$sql = 'SELECT * FROM patients WHERE receive="Cancer"';
foreach ($pdo->query($sql) as $row){
echo '<tr>';
echo '<td><center>'. $row['status'] . '</center></td>';
echo '<td><center>'. $row['receive'] . '</center></td>';
}
Database::disconnect();
?>
</tr>
</tbody>

Answer 1

How about this?
<?php
include 'database.php';
$pdo = Database::connect();
$sql = 'SELECT * FROM patients WHERE receive="Cancer" order by status';
$last = '';
foreach ($pdo->query($sql) as $row){
echo '<tr>';
if($last == $row['status'])
{
echo '<td></td>';
}
else
{
$last = $row['status'];
echo '<td><center>'. $row['status'] . '</center></td>';
}
echo '<td><center>'. $row['receive'] . '</center></td>';
}
Database::disconnect();
?>

Answer 2

<?php
include 'database.php';
$pdo = Database::connect();
$sql = 'SELECT * FROM patients WHERE receive="Cancer"';
$counter=0;
foreach ($pdo->query($sql) as $row){
$counter++;
echo '<tr>';
if($counter==1){
echo '<td><center>Cancer</center></td>';
}else{
echo '<td><center></center></td>';
}
echo '<td><center>'. $row['receive'] . '</center></td>';
}
Database::disconnect();
?>
Simply echo the status just in the first row...

Answer 3

Save the last value of $row['status'] in a variable. If it's the same leave it blank in the output.
$last_status = null;
foreach ($pdo->query($sql) as $row) {
echo '<tr>';
$status = $row['status'] == $last_status ? '' : $row['status'];
echo '<td style="text-align: center;">' . $status . '</td>';
echo '<td style="text-align: center;">' . $row['receive'] . '</td>';
echo '</tr>';
$last_status = $row['status'];
}
Also, you shouldn't use the obsolete <center> tag, use CSS. And </tr> should be inside the loop, not at the end.
You probably should also use ORDER BY status in the query, so that all the rows with the same status are together.