Flip associative array and store new values in subarrays to prevent losing duplicated values
$grouped = array();
foreach ($input as $choice => $group) {
$grouped[$group][] = $choice;
}
var_dump($grouped);
Flip associative array and store new values in subarrays to prevent losing duplicated values
$grouped = array();
foreach ($input as $choice => $group) {
$grouped[$group][] = $choice;
}
var_dump($grouped);