Convert a string of comma separated values to true/false array

Question

I am trying to find a way to get the separated values and convert them to an array with false or true

$idValues = '111111,222222,333333';
$lubuvnaIDs = explode(",", $idValues);
$groups = '';

foreach($lubuvnaIDs as $row ){
        $groups .= $row .'=>'. true;
}

$newGroups = array($groups);


$dataSub = array (
        'interests' => $newGroups,
);

The final output of $newGroups should look like this:

$newGroups = array( 
        '111111'    => true,
        '222222'    => true,
        '333333'    => true
);

Answer 1

Instead of a loop, you can use array_fill_keys() with the list of values from the explode() . Setting the initial value to be true...

$newGroups = array_fill_keys(explode(",", $idValues), true);

Answer 2

How about just looping through the values and adding them to an array:

$idValues = '111111,222222,333333';
$lubuvnaIDs = explode(",", $idValues);

$newGroups = [];
foreach ($lubuvnaIDs as $id) {
    $newGroups[$id] = true;
}