Switch elements of 2d array - php

Question

I have a problem: I can't make my script working with penalties, but I made it work with bonuses.
Start: two-dimensional array of users, each has id, name, start position and modificator (if modificator < 0 its bonus; if modificator > 0 its penalty).
How modificators work: for example, I have a queue of users Test1, Test2, Test3. If I give user Test3 bonus 1, he will switch places with user Test 2 and final queue will be Test1, Test3, Test2. If I give him bous 2, than he will be first at queue.
Penalties works the other way around. If I give user Test1 penalty 1, he will be second in a queue. If I give him penalty 3, he will be moved to the end of the queue.
This is my working code for bonuses:
<?
$new = array(); $orders = array();
$new[111]['position'] = 1; $new[111]['user'] = 'Test1'; $orders[1] = 111; $new[111]['shift'] = 0;
$new[222]['position'] = 2; $new[222]['user'] = 'Test2'; $orders[2] = 222; $new[222]['shift'] = 0;
$new[333]['position'] = 3; $new[333]['user'] = 'Test3'; $orders[3] = 333; $new[333]['shift'] = 0;
$new[444]['position'] = 4; $new[444]['user'] = 'Test4'; $orders[4] = 444; $new[444]['shift'] = 0;
$new[555]['position'] = 5; $new[555]['user'] = 'Test5'; $orders[5] = 555; $new[555]['shift'] = 0;
$new[666]['position'] = 6; $new[666]['user'] = 'Test6'; $orders[6] = 666; $new[666]['shift'] = 0;
$new[777]['position'] = 7; $new[777]['user'] = 'Test7'; $orders[7] = 777; $new[777]['shift'] = 0;
$new[888]['position'] = 8; $new[888]['user'] = 'Test8'; $orders[8] = 888; $new[888]['shift'] = 0;
//shift function
function bonus($start, $bonus)
{
global $new, $orders;
//for bonuses, shift to start, $bonus is negative number
if ($bonus < 0)
{
for ($i = $start; $i > ($start - abs($bonus)); $i--)
{
$order_id = intval($orders[$i]);
$prev = intval($orders[$i - 1]);
if ($prev != 0)
{
$temp = $new[$order_id]['position'];
$new[$order_id]['position'] = $new[$prev]['position'];
$new[$prev]['position'] = $temp;
$orders[$i] = $prev;
$orders[$i - 1] = $order_id;
}
}
}
//end for bonuses
}
// Now I set modificator (bonus negative, penalty positive)
$new[555]['shift'] = -2;
// sort by bonuses
$i = 1;
foreach($new as $value)
{
$order_id = $orders[$i];
bonus($new[$order_id]['position'], $new[$order_id]['shift']);
$i++;
}
// sort 2d array with field position
usort($new, function($a, $b){
return $a['position'] <=> $b['position'];
});
//DATA OUTPUT
$i = 1;
foreach($new as $value)
{
echo $i . '. ' . $value['user'] . ' ; shift: ' . $value['shift'];
echo '<br>';
$i++;
}
?>
At this code I set bonus with: $new[555]['shift'] = -2;
So, penalty will be like: $new[444]['shift'] = 3;
Code for penalties I think must be something like this:
//for penalty, shift to the end, $bonus positive number
if ($bonus > 0)
{
$total_new = count($new);
for ($i = $start; $i < ($start + $bonus); $i++)
{
$order_id = intval($orders[$i]);
$next = intval($orders[$i + 1]);
if ($next < $total_new)
{
$temp = $new[$order_id]['position'];
$new[$order_id]['position'] = $new[$next]['position'];
$new[$next]['position'] = $temp;
$orders[$i] = $next;
$orders[$i + 1] = $order_id;
}
}
}
//end code for penalty
Here is something wrong with $orders. I tried many different types of code all day long, including array enumeration in asc/desc order, but it didn't work correcty...
P.S. I know about array_multisort, but I dont need to sort, I need to switch elements with each other.
Again: bonus 2 means that user must switch places with previous number 2 times. Penalty 3 means that user must switch places with next user 3 times.