Get duplicate multi-d array value

Question

I would like to get all the duplicate values from an array, but all i see here is how to remove them, is there any way in retrieving only the duplicates and showing how many times they have duplicated?

For example

array(
  array(1,2,3,4,5,6),
  array(6,5,4,3,2,1),
  array(1,2,3,4,5,6),
  array(3,4,8,4,3,1),
  array(6,5,4,3,2,1),
)

I want to have like array(1,2,3,4,5,6) duplicated 2 times and array(6,5,4,3,2,1) also duplicated 2 times

Those that are not duplicated will be ignored.

LF-DevJourney · Accepted Answer · 2016-12-22 04:23:15Z

1

Demo

foreach($array as $arr)
{
  $o[implode(',', $arr)][] = 1;
}
array_walk($o, function($v, $k){echo $k.':'.count($v);});

answered Dec 22, 2016 at 4:23

LF-DevJourney

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