Append similar date record in one td - php

Question

I have following array of record which contains user as well as location information:
$arr =
[
[
'user_id' => 5,
'l_id' => 10,
'Name' => 'John Doe',
'Location' => 'Chicago',
'date' => '2021-10-02'
],
[
'user_id' => 5,
'l_id' => 11,
'Name' => 'John Doe',
'Location' => 'Houston',
'date' => '2021-10-02'
],
[
'user_id' => 6,
'l_id' => 12,
'Name' => 'Rob Doe',
'Location' => 'Dallas',
'date' => '2021-10-02'
],
[
'user_id' => 6,
'l_id' => 13,
'Name' => 'Rob Doe',
'Location' => 'Philadelphia',
'date' => '2021-10-02'
],
];
I'm trying to display same user/day location record in one td by using following code:
$html = '';
foreach ($arr as $ar) {
if ($ar['date'] == $ar['date']) {
$html .= '<tr>
<td>' . $ar['Name'] . '</td>
<td>' . $ar['date'] . '</td>
<td>' . $ar['Location'] . '</td>
</tr>';
}
}
HTML:
<table>
<thead>
<tr>
<th>Name</th>
<th>Date</th>
<th>Location</th>
</tr>
</thead>
<tbody>
<?= $html; ?>
</tbody>
</table>
But it's repeating same date record multiple times (Name, Date):
Name Date Location
John Doe 2021-10-02 Chicago
John Doe 2021-10-02 Houston
Rob Doe 2021-10-02 Dallas
Rob Doe 2021-10-02 Philadelphia
And I want result like this:
Name Date Location
John Doe 2021-10-02 Chicago
Houston
--------------------------------------------
Rob Doe 2021-10-02 Dallas
Philadelphia

Answer 1

Use this function for creating your required data:
function arrayChanger($oldArray) {
$newArray = array();
foreach ($oldArray as $v) {
if (!isset($newArray[$v['user_id']])) {
$newArray[$v['user_id']] = array(
'user_id' => $v['user_id'],
'dataArray' => array()
);
}
$newArray[$v['user_id']]['dataArray'][] = array(
'l_id' => $v['l_id'],
'Name' => $v['Name'],
'Location' => $v['Location'],
'date' => $v['date'],
);
}
return $newArray;
}
And then you can use that by your array:
$html = '<table>
<thead>
<tr>
<th>Name</th>
<th>Date</th>
<th>Location</th>
</tr>
</thead>
<tbody>';
foreach (arrayChanger($arr) as $newArrayKey => $newArrayValue) {
if (count($newArrayValue['dataArray']) <= 1) {
$html .= '<tr>
<td>' . $value['Name'] . '</td>
<td>' . $value['date'] . '</td>
<td>' . $value['Location'] . '</td>
</tr>';
} else {
$i = 0;
foreach ($newArrayValue['dataArray'] as $key => $value) {
$html .= '<tr>';
($i === 0) ? $html .= '<td>' . $value['Name'] . '</td>' : $html .= '<td> </td>';
($i === 0) ? $html .= '<td>' . $value['date'] . '</td>' : $html .= '<td> </td>';
$html .= '<td>' . $value['Location'] . '</td>';
$html .= '</tr>';
$i = $i + 1;
}
}
}
$html .= '</tbody>
</table>';
The output would be as your need:
Name
Date
Location
John Doe
2021-10-02
Chicago
Houston
Rob Doe
2021-10-02
Dallas
Philadelphia
Edit:
As changes in question, I changed my answer so we have the function:
function arrayChanger($oldArray)
{
$newArray = array();
foreach ($oldArray as $v) {
if (!isset($newArray[$v['user_id']])) {
$newArray[$v['user_id']] = array(
'user_id' => $v['user_id'],
'l_id' => $v['l_id'],
'Name' => $v['Name'],
'date' => $v['date'],
'UserLocations' => array()
);
}
$newArray[$v['user_id']]['UserLocations'][] = array(
'Location' => $v['Location'],
);
}
return $newArray;
}
And after that creating the HTML:
$html = '<table>
<thead>
<tr>
<th>Name</th>
<th>Date</th>
<th>Location</th>
</tr>
</thead>
<tbody>';
foreach (arrayChanger($arr) as $newArrayKey => $newArrayValue) {
$html .= '<tr>
<td>' . $newArrayValue['Name'] . '</td>
<td>' . $newArrayValue['date'] . '</td>
<td>';
foreach ($newArrayValue['UserLocations'] as $key => $value) {
$html .= $value['Location'] . "<br>";
}
$html .= '</td>
</tr>';
}
$html .= '</tbody>
</table>';
The output will:
Name
Date
Location
John Doe
2021-10-02
ChicagoHouston
Rob Doe
2021-10-02
DallasPhiladelphia

Answer 2

You can make an new Array where you merge the date and location.
$newArr = [];
foreach($arr as $item) {
if(isset($newArr[$item['Name']])) {
$newArr[$item['Name']]['Location'][] = $item['Location'];
$newArr[$item['Name']]['date'][] = $item['date'];
} else {
$newArr[$item['Name']]['user_id'] = $item['user_id'];
$newArr[$item['Name']]['l_id'] = $item['l_id'];
$newArr[$item['Name']]['Name'] = $item['Name'];
$newArr[$item['Name']]['Location'] = [$item['Location']];
$newArr[$item['Name']]['date'] = [$item['date']];
}
}
print_r($newArr);
output would be:
Array
(
[John Doe] => Array
(
[user_id] => 5
[l_id] => 10
[Name] => John Doe
[Location] => Array
(
[0] => Chicago
[1] => Houston
)
[date] => Array
(
[0] => 2021-10-02
[1] => 2021-10-02
)
)
[Rob Doe] => Array
(
[user_id] => 6
[l_id] => 12
[Name] => Rob Doe
[Location] => Array
(
[0] => Dallas
[1] => Philadelphia
)
[date] => Array
(
[0] => 2021-10-02
[1] => 2021-10-02
)
)
)
Then you can use your loop. And for the elements date and location you can use the php implode (implode(',', [])) function. That will be the easiest way.

Answer 3

Try this code which print name and date only the first time:
$html = '';
$count=0;
foreach ($arr as $ar) {
if ($ar['date'] == $ar['date']) {
if($count == 0){
$html .= '<tr>
<td>' . $ar['Name'] . '</td>
<td>' . $ar['date'] . '</td>
<td>' . $ar['Location'] . '</td>
</tr>';
$count++;
}
else{
$html .= '<tr>
<td></td>
<td></td>
<td>' . $ar['Location'] . '</td>
</tr>';
$count=0;
}
}
}