PHP: creating table with conditions - php

Question

I have array like this in php:
$arr = [
[
"group": 1,
"name": John
],
[
"group": 1,
"name": Luke
],
[
"group": 1,
"name": Peter
],
[
"group": 2,
"name": Pia
]
]
expected output in html table:
GROUP | NAME
------|-----
| John
1 | Luke
| Peter
------|-----
2 | Pia
I attempted to work around the foreach but i cant figure it out. Below is the last code i tried:
<table>
<tr>
<th>GROUP</th>
<th>NAME</th>
</tr>
<tbody>
<?php $group = ''; ?>
<?php foreach($results AS $result) : ?>
<tr>
<td>
<?php if($group !== $result['group']): ?>
<?= $result['group'] ?>
<?php endif; ?>
</td>
<td>
<ul>
<li><?= $result['name'] ?></li>
</ul>
</td>
</tr>
<?php $group = $result['group']; ?>
<?php endforeach; ?>
</tbody>
</table>
but the result is:
GROUP | NAME
------|-----
1 | John
------|-----
| Luke
------|-----
| Peter
------|-----
2 | Pi
I need to show it as the about expected output.
Please help, thanks

Answer 1

You need to make group first like below
<?php
$results = [
["group"=> 1,"name"=> "John"],
["group"=> 1,"name"=> "Luke"],
["group"=> 1,"name"=> "Peter"],
["group"=> 2,"name"=> "Pia"]
];
$newArr = array();
foreach ($results as $key => $value) {
$newArr[$value["group"]][] = $value["name"];
}
?>
<table border="1">
<thead>
<tr><th>GROUP</th><th>NAME</th></tr>
</thead>
<tbody>
<?php foreach($newArr as $group=>$values){ ?>
<tr>
<td><?php echo $group;?></td>
<td>
<ul style="margin: 5px;">
<?php
foreach($values as $key=>$name){
echo "<li>$name</li>";
}
?>
</ul>
</td>
</tr>
<?php } ?>
</tbody>
</table>
Which will give output,

Answer 2

All you need is a little counting and some CSS magic. Add the first block of code anywhere below your array and above your table.
$d = array();
foreach($results as $c){
if(array_key_exists($c['group'],$d)){
$d[$c['group']]++;
}else{
$d[$c['group']] = 1;
}
}
And then change your tbody code to this:
<tbody>
<?php $group = ''; ?>
<?php foreach($results AS $result) : ?>
<?php $t = $result['group']; ?>
<tr>
<?php if($group !== $result['group']): ?>
<?php echo '<td rowspan="' . $d[$t] . '" style="vertical-align:middle;">'; ?>
<?= $result['group'] ?>
</td>
<?php endif; ?>
<td>
<ul>
<li><?= $result['name'] ?></li>
</ul>
</td>
</tr>
<?php $group = $result['group']; ?>
<?php endforeach; ?>
</tbody>
Mind you this is just a mockup that should work but it's very basic and you'll properly need to beautify it a little.
Further more, you could remove the counting if you grouped your array's by "group" instead of having each person hold the group as well.