I have a multidimensional array with numbers. I want to check each array with the rest, if it has more than 1 number match with any array, then remove and push numbers to separate array hold all numbers.

In the example Array[0] has 1 & 5 same as Array[2] then I'll send values (1,2,3,4,5) of Array[0] to array $removedNumbers() and unset.

Also Array[1] has two match with Array[3].

Conclusion: Array[0] and Array[1] will be removed and all values go to removedNumbers().

My original array has 400 child arrays and for some reason it doesn't process to the end, so I use a loop to keep doing the job. Also I noticed lost numbers from $removedNumbers() array.

Any idea to fix or improve it?

for ($i = 0; $i < count($MyArray); $i  ) {
    $n = $i   1;
    while ($n < count($MyArray)) {
        $match = count(array_intersect($MyArray[$i], $MyArray[$n]));
        if ($match > 1) {
            for ($k = 0; $k < 5; $k  ) {
                array_push($removedNumbers, $MyArray[$i][$k]);
            }
            unset($allTickets[$i]);
            $MyArray = array_values($MyArray);
            break;
        }
        $n  ;
    }
}

Sample data for $MyArray:

[
    [1,2,3,4,5],
    [1,6,7,8,9],
    [1,5,6,10,11],
    [6,12,13,14,15]
]

CodePudding user response：

• Loop on the dataset to create a set of elements with indexes of wherever it is present.

• Loop again on the dataset again to check with count of each element in the set. If it is greater than 1, it means it is present in more than 1 subarray. If count of such common elements is greater than 1, then add them to removedNumbers and unset them from the current array.

Snippet:

<?php

$set = [];
foreach($d as $idx => $val){
  foreach($val as $v){
    $set[ $v ][ $idx ] = true;
  }
}

$removedNumbers = [];

foreach($d as $idx => $val){
  $commonElements = 0;
  foreach($val as $v){
    if(count($set[ $v ]) > 1){
      $commonElements  ;
      unset($set[ $v ][ $idx ]);
    }
  }

  if($commonElements > 1){
    unset($d[ $idx ]);
    $removedNumbers = array_merge($removedNumbers, $val);
  }
}

Online Demo