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@NogDogDec 03.2022 — #There may be some more clever/efficient way to do this, but this seems to work:
outputs:
Match All Array Items as Pairs
This is a weird one, I’ve got a scenario where an array of items are being posted via a form. The array are ID’s.
I need to pair each ID with the other. For example; if I have 1,2,3,4,5 I need
1 – 2
1 – 3
1 – 4
1 – 5
2 – 3
2 – 4
2 – 5
I do not want to duplicate them either, what’s the best way to do this?
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@NogDogDec 03.2022 — #There may be some more clever/efficient way to do this, but this seems to work:[code=php]
$ids = [3, 1, 5, 4, 2];
sort($ids);
$ids_copy = $ids;
$result = [];
foreach($ids as $id) {
foreach($ids_copy as $id2) {
if($id2 > $id) {
$result[] = [$id, $id2];
}
}
}
print_r($result);
[/code]outputs:
[code=text]
Array
(
[0] => Array
(
[0] => 1
[1] => 2
)
[1] => Array
(
[0] => 1
[1] => 3
)
[2] => Array
(
[0] => 1
[1] => 4
)
[3] => Array
(
[0] => 1
[1] => 5
)
[4] => Array
(
[0] => 2
[1] => 3
)
[5] => Array
(
[0] => 2
[1] => 4
)
[6] => Array
(
[0] => 2
[1] => 5
)
[7] => Array
(
[0] => 3
[1] => 4
)
[8] => Array
(
[0] => 3
[1] => 5
)
[9] => Array
(
[0] => 4
[1] => 5
)
)
[/code]