如何将逗号分隔值与关联数组分开？

Question

I have an array like

Array
(
    [0] => 2,2-0-tc
    [1] => 2-0
    [2] => 2-0-tc
    [3] => 3,3-0-sc-v6
    [4] => 3-0-sc-v6
    [5] => 3-0sc-v6
    [6] => 5-0-sc-v8
)

and I want to extract the comma separated value from array and then create new array like

Array
(
    [2] => 2,2-0-tc
    [2-0-tc] => 2,2-0-tc
    [2-0] => 2-0
    [3] => 3,3-0-sc-v6
    [3-0-sc-v6] => 3,3-0-sc-v6
    [3-0sc-v6] => 3-0sc-v6
    [5-0-sc-v8] => 5-0-sc-v8
)

thanks in addvance

Answer 1

Explode and iterate each comma-delimited value and prevent overwriting with an isset condition.

Code: demo: https://3v4l.org/9ArV7

$array = [
    "2,2-0-tc",
    "2-0",
    "2-0-tc",
    "3,3-0-sc-v6",
    "3-0-sc-v6",
    "3-0sc-v6",
    "5-0-sc-v8"
];

foreach ($array as $item) {
    $values = explode(",", $item);
    foreach ($values as $value) {
        if (!isset($result[$value])) {
             $result[$value] = $item;
        }
    }
}
var_export($result);

Output:

array (
  2 => '2,2-0-tc',
  '2-0-tc' => '2,2-0-tc',
  '2-0' => '2-0',
  3 => '3,3-0-sc-v6',
  '3-0-sc-v6' => '3,3-0-sc-v6',
  '3-0sc-v6' => '3-0sc-v6',
  '5-0-sc-v8' => '5-0-sc-v8',
)