"count of duplicate elements in an array in php" Answer’s


You can adopt this trick; map each item of the array (which is an array itself) to its respective ['lid'] member and then use array_count_value() to do the counting for you.

array_count_values(array_map(function($item) {
    return $item['lid'];
}, $arr);

Plus, it's a one-liner, thus adding to elite hacker status.


Since 5.5 you can shorten it to:

array_count_values(array_column($arr, 'lid'));
Wednesday, March 31, 2021
answered 11 Months ago
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