Find the count of array with specific key and value in php

Question

I have a multidimensional array with following values

$array = array( 
            0 => array (
               \"id\" => 1,
               \"parent_id\" =&         


        

Answer 1

You can use count with array_filter

function doSearch($id, array $array) {

    $arr = array_filter($array, function ($var) use ($id){
        if ($id === $var['parent_id']) {
           return true;
        }
    });

    return count($arr);
}

or shorter version

function doSearch($id, array $array) {
    return count(array_filter($array, function($var) use ($id) {
        return $id === $var['parent_id'];
    }));
}

So basically it gets elements where $id is equal to parent_id and returns their count