php in_array between 2 arrays - php

Question

I am trying to determine which elements coincide in 2 arrays. The issue is that only the last element in my second array is selected instead of all 3. What am I missing here?
<?php
$containers = [
0 => ['id'=>'1', 'name'=>'Peta'],
1 => ['id'=>'2', 'name'=>'Epta'],
3 => ['id'=>'3', 'name'=>'Fras'],
4 => ['id'=>'4', 'name'=>'Maxs'],
5 => ['id'=>'5', 'name'=>'Gtay'],
6 => ['id'=>'6', 'name'=>'Prat'],
7 => ['id'=>'7', 'name'=>'Drat'],
];
$invoices = [
0 => ['id'=>'1', 'name'=>'Lebo'],
1 => ['id'=>'3', 'name'=>'Efta'],
2 => ['id'=>'4', 'name'=>'Gadr'],
];
foreach ($containers as $container) {
foreach ($invoices as $invoice) {
if (in_array($container['id'], $invoice)) {
$selected = 'selected';
} else {
$selected = '';
}
}
echo $container['name'].' -> '.$selected.'<br>';
} ?>

Answer 1

Add "break" after found in array.
<?php
$containers = [
0 => ['id' => '1', 'name' => 'Peta'],
1 => ['id' => '2', 'name' => 'Epta'],
3 => ['id' => '3', 'name' => 'Fras'],
4 => ['id' => '4', 'name' => 'Maxs'],
5 => ['id' => '5', 'name' => 'Gtay'],
6 => ['id' => '6', 'name' => 'Prat'],
7 => ['id' => '7', 'name' => 'Drat'],
];
$invoices = [
0 => ['id' => '1', 'name' => 'Lebo'],
1 => ['id' => '3', 'name' => 'Efta'],
2 => ['id' => '4', 'name' => 'Gadr'],
];
foreach ($containers as $container) {
foreach ($invoices as $invoice) {
if (in_array($container['id'], $invoice)) {
$selected = 'selected';
break;
} else {
$selected = '';
}
}
echo $container['name'] . ' -> ' . $selected . '<br>';
} ?>

Answer 2

$containers = [
[ 'id' => '1', 'name' => 'Peta' ],
[ 'id' => '2', 'name' => 'Epta' ],
[ 'id' => '3', 'name' => 'Fras' ],
[ 'id' => '4', 'name' => 'Maxs' ],
[ 'id' => '5', 'name' => 'Gtay' ],
[ 'id' => '6', 'name' => 'Prat' ],
[ 'id' => '7', 'name' => 'Drat' ],
];
$invoices = [
[ 'id' => '1', 'name' => 'Lebo' ],
[ 'id' => '3', 'name' => 'Efta' ],
[ 'id' => '4', 'name' => 'Gadr' ],
];
$result = array_filter(
$containers,
fn($item) => in_array($item['id'], array_column($invoices, 'id'))
);
print_r($result);
Output:
Array
(
[0] => Array
(
[id] => 1
[name] => Peta
)
[2] => Array
(
[id] => 3
[name] => Fras
)
[3] => Array
(
[id] => 4
[name] => Maxs
)
)

Answer 3

Seems the easiest solution was to create a new array:
foreach ($invoices as $invoice) {
$compare_id[] = $invoice['id'];
}
foreach ($containers as $container) {
if (in_array($container['id'], $compare_id)) {
$selected = 'selected';
} else {
$selected = '';
}
echo $container['name'].' -> '.$selected.'<br>';
}