How can I count the occurrence of a key based on array value

Question

I have this array

[furnitures] => Array
(
    [0] => Array
    (
        [fi_id] => 8
        [price] => 15.00
    )
    [1] => Array
    (
        [fi_id] => 8
        [price] => 15.00
    )
    [2] => Array
    (
        [fi_id] => 7
        [price] => 15.00
    )
    [3] => Array
    (
        [fi_id] => 7
        [price] => 15.00
    )
    [4] => Array
    (
        [fi_id] => 8
        [price] => 15.00
    )
    [5] => Array
    (
        [fi_id] => 9
        [price] => 15.00
    )
)

I want unique fi_id from it and I also want to count the occurence from it. How many times is this being repreated. Does PHP has any built in function for it?

Like unique items are 7,8,9 and 7 is repreated 2 times, 8 is repreated 3 times and 9 is repreated 1 time.

I tried using "array_count_values" but it iis for 2d simple arrays. not if values are in array as well. — Ali Zia, Oct 19 '17 at 07:59
Hi, i am unable to answer this question, here i am pasting that might works — jvk, Oct 19 '17 at 08:39
$fid=[]; foreach ($array['furnitures'] as $key => $value) { $fid[$value['fi_id']]=$value; } — jvk, Oct 19 '17 at 08:39

Vural · Accepted Answer · 2018-07-26T17:44:43.380

1

you can try this:

//Here you get unique Ids
$uniqueFiIdList = array_unique(array_map(function ($el) 
{ 
   return $el['fi_id']; 
}, $furnitures));

//Here you get the total unique occurences
$totalUniqueFiId = count($furnitures) - count($uniqueFiIdList);

edited Jul 26 '18 at 17:44

answered Oct 19 '17 at 08:06

Vural

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How can I count the occurrence of a key based on array value

1 Answers1