PHP - Combine 2 arrays where key is the same multiple times - php

Question

I have 2 arrays that i wish to combine, however the values in both arrays are the same but i still wish to combine them. Is this possible?
Lets say i have the following arrays:
Array ( [0] => 2683 [1] => 2683 [2] => 2683 [3] => 2683 [4] => 2683 [5] => 2683)
Array ( [0] => 2097152 [1] => 4194304 [2] => 6291456 [3] => 8391910 [4] => 234889216 [5] => 234889280)
I used array_combine but then it only displays 1 value. In this case i want they key to allow duplicates, or atleast bring them somehow together in an array where i can simply loop through them.
Is this possible with arrays? Or does anyone else have a better solution? I have to later loop through them and have the matched values, thats the point.
Below my code if that helps.
try {
$stmt = $pdo->prepare("SELECT deviceid, interfaceoid FROM poorten WHERE deviceid = '2683'");
$stmt->execute();
$deviceid = array();
$interfaceoid = array();
if($stmt->rowCount() > 0) {
while($row = $stmt->fetch()) {
//echo "" . $row['deviceid'] . " : ";
//echo "" . $row['interfaceoid'] . "</br>";
$deviceid[] = $row['deviceid'];
$interfaceoid[] = $row['interfaceoid'];
}
$result = array_combine($deviceid, $interfaceoid);
var_dump($result);
}
}
catch(PDOException $e) {
echo "Something went wrong: " . $e->getMessage() . "";
}

Answer 1

Use deviceid as an array key:
$result = [];
if ($stmt->rowCount() > 0) {
while ($row = $stmt->fetch()) {
if (!isset($result[$row['deviceid']])) {
$result[$row['deviceid']] = [];
}
$result[$row['deviceid']][] = $row['interfaceoid'];
}
}
var_dump($result);

Answer 2

Try this, for live demo and live demo
foreach($values as $k => $v)
{
$result[$keys[$k]][] = $v;
}
$result = array_map(function($v){return count($v) > 1 ? $v : $v[0];}, $result);