How to get and generate repetitive numbers (subset) arrays in PHP - php

Question

I check the code and realized that it can't show repetitive numbers
MY CODE
<?php
/* Designated level for each exp
Level 2 - 23 exp
Level 3 - 34 exp
Level 4 - 45 exp
Level 5 - 56 exp
Level 6 - 68 exp
Level 7 - 79 exp
Level 8 - 90 exp
Level 9 - 101 exp
Level 10 - 112 exp
Level 11 - 123 exp
Level 12 - 134 exp
Level 13 - 145 exp
Level 14 - 156 exp
Level 15 - 168 exp
Level 16 - 179 exp
*/
$limit = 100000-99370;
// Level
$arrlevel = array ('Level 2','Level 3','Level 4','Level 5','Level 6','Level 7','Level 8','Level 9','Level 10','Level 11','Level 12','Level 13','Level 14','Level 15','Level 16');
// Exp
$array = array (23,34,45,56,68,79,90,101,112,123,134,145,156,168,179);
$array = array_filter($array, function($var) use ($limit) {
return ($var <= $limit);
});
$num = count($array);
$total = pow(2, $num);
$out = array();
for ($i = 0; $i < $total; $i++) {
$comb = array();
for ($j = 0; $j < $num; $j++) {
// is bit $j set in $i?
if (pow(2, $j) & $i){
$comb[] = $array[$j];
}
}
if (array_sum($comb) == $limit)
{
$out[] = $comb;
}
}
array_multisort(array_map('count', $out), SORT_ASC, $out);
$out = array_unique($out, SORT_REGULAR);
$m = 1;
$mapper = [
23 => "Level 2",
34 => "Level 3",
45 => "Level 4",
56 => "Level 5",
68 => "Level 6",
79 => "Level 7",
90 => "Level 8",
101 => "Level 9",
112 => "Level 10",
123 => "Level 11",
134 => "Level 12",
145 => "Level 13",
156 => "Level 14",
168 => "Level 15",
179 => "Level 16",
];
foreach($out as $result)
echo "<b>Possible Answer ". $m++. " : </b><br> " .implode(' , ', array_map(function($x) use ($mapper) {
return $mapper[$x] . " - " . $x;
}, $result))."
<br><br>";
My Input and Ouput
If i input 99318
the output is like this
Possible Answer 1 :
Level 10 - 112 , Level 11 - 123 , Level 12 - 134 , Level 13 - 145 , Level 15 - 168
I want to generate also the repetitive numbers too
But it cannot show some repetitive numbers answer like this
Possible Answer :
Level 4 - 45 , Level 10 - 112 , Level 11 - 123 , Level 11 - 123 , Level 12 - 134 , Level 13 - 145
You can see there's two Level 11 - 123
I want the ouput like this
Possible Answer :
Level 4 - 45 , Level 10 - 112 , Level 11 (x2) - 246 , Level 12 - 134 , Level 13 - 145
I want to group all repititive numbers and sum up them all

Answer 1

One option to get your result is to pass another value to array_map with the result of array_count_values.
Then inside the mapping you can determine to show the count for the number based on the index like $countValues[$x] just as for the mapper.
For example
foreach($out as $result) {
$countValues = array_count_values($result);
echo "<b>Possible Answer " . $m++ . " : </b><br> " . implode(' , ',
array_map(function ($x) use ($mapper, $countValues) {
$strCount = $countValues[$x] > 1 ? " (" . $countValues[$x] . ")" : "";
return $mapper[$x] . $strCount . " - " . $x;
}, array_unique($result))) . "
<br><br>";
}
That will give you a result like
Possible Answer 1 :
Level 2 - 23 , Level 6 - 68 , Level 7 (x2) - 79 , Level 9 - 101 , Level 10 - 112 , Level 15 - 168
Php demo with as a test a duplicate value 79 for $array