count of duplicate elements in an array in php

multidimensional-array, php

Solution

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.

Update

Since 5.5 you can shorten it to:

array_count_values(array_column($arr, 'lid'));

Problem

Hi, How can we find the count of duplicate elements in a `multidimensional array` ? I have an array like this ``` Array ( [0] => Array ( [lid] => 192 [lname] => sdsss ) [1] => Array ( [lid] => 202 [lname] => testing ) [2] => Array ( [lid] => 192 [lname] => sdsss ) [3] => Array ( [lid] => 202 [lname] => testing ) ) ``` How to find the count of each elements ? i.e, count of entries with id `192`,`202` etc

Original source