PHP - search in array and create new one - php

Question

I want to avoid if it is possible foreach combined with if. I want to search the array, take out the matches and create new one base on result.
In this example I want to create separate arrays for each os -
$os1 = $array;
$os2 = $array...
Array looks like this:
$array = [
0 => [
'id' => 1,
'name' => 'name',
'os' => 1
],
1 => [
'id' => 2,
'name' => 'name',
'os' => 1
],
2 => [
'id' => 3,
'name' => 'name',
'os' => 2
],
3 => [
'id' => 3,
'name' => 'name',
'os' => 2
]
];

Answer 1

Use array_filter to reduce the input array to the expected result
$os = 1;
$data = array_filter($array, function($item) use ($os) {
return $item['os'] == $os;
});

Answer 2

The short one
$os1 = [];
$os2 = [];
$os3 = [];
foreach ($array as $item) {
${'os' . $item['os']}[] = array('id' => $item['id'], 'name' => $item[$name];
}
The better one
$os1 = [];
$os2 = [];
$os3 = [];
foreach ($array as $item) {
switch($item['os']) {
case 1:
$os1[] = array('id' => $item['id'], 'name' => $item[$name]);
break;
case 2:
$os2[] = array('id' => $item['id'], 'name' => $item[$name]);
break;
case 3:
$os3[] = array('id' => $item['id'], 'name' => $item[$name]);
break;
default:
throw new Exception('Unknown Os');
}
}
Also you maybe want to assign array($item['id'] => $item[$name]); instead of array('id' => $item['id'], 'name' => $item[$name]);
$os1 = [];
$os2 = [];
$os3 = [];
foreach ($array as $item) {
${'os' . $item['os']}[] = array($item['id'] => $item[$name]);
}