Drop Array Element and Sum Remaining Elements - php

Question

I have an array that output's this:
Array (
[0] => Array ( [week] => 1 )
[1] => Array ( [user] => 1 )
[2] => Array ( [score] => 6 )
[3] => Array ( [week] => 1 )
[4] => Array ( [user] => 15 )
[5] => Array ( [score] => 6 )
[6] => Array ( [week] => 2 )
[7] => Array ( [user] => 1 )
[8] => Array ( [score] => 5 )
[9] => Array ( [week] => 2 )
[10] => Array ( [user] => 15 )
[11] => Array ( [score] => 7 )
How do I drop the lowest score for user 1 (which would be 5 taken in week 2) from the array? I only want to drop the lowest number from the array for user 1 and then want to do the same thing for user 15 (which would be 6 in week 1).
Then, how would I sum the remaining scores in the array by user? There will be more weeks data to follow and I always want to drop the lowest per user for any week.
So thus far the total score for User 1 would be 6 thru 2 weeks and the total score for User 15 would be 7 thru week 2. If week 3 has lower scores for both users then their totals would be: User 1 = 11 and User 15 = 13.
Thanks in advance!!

Answer 1

Assuming that all records are in groups of 3:
$array = array(/* your data */);
$count = count($array) / 3;
$lowest = 0;
$min = PHP_INT_MAX;
for($i = 0; $i < $count; $i++)
{
if($array[$i + 1]['user'] == 1)
{
if($array[$i + 2]['score'] < $min)
{
$min = $array[$i + 2]['score'];
$lowest = $i;
}
}
}
unset($array[$lowest]);
unset($array[$lowest + 1]);
unset($array[$lowest + 2]);
Should at least give you the idea.

Answer 2

Your array structure is bizarre. Why is every array element itself a singleton array? Something like the following would make more sense:
$array_better = array (
[0] => array (
['week'] => 1,
['user'] => 1,
['score'] => 6
),
[1] => array (
['week'] => 1,
['user'] => 15,
['score'] => 6
),
[2] => array (
['week'] => 2,
['user'] => 1,
['score'] => 5
),
[3] => array (
['week'] => 2,
['user'] => 15,
['score'] => 7
)
)
But for that matter, what would make still more sense would be a $array[$week][$user] structure, like this:
$array_wu = array (
[1] => array (
[1] => 6,
[15] => 6
),
[2] => array (
[1] => 5,
[15] => 7
)
)
(If you do not understand what I have done here, please ask me about it.)
Alternatively again, you could have a $array[$user][$week] structure:
$array_uw = array (
[1] => array (
[1] => 6,
[2] => 5
),
[15] => array (
[1] => 6,
[2] => 7
)
)
This in particular would make it very easy to do what you are trying to do - in fact it would take only one line of code statement:
$sum_excl_lowest = (array_key_exists(1, $array_uw) and count($array_uw[1])) ?
array_sum($array_uw[1]) - min($array_uw[1]) :
0;