How to count number of elements of a multidimensional array without using loop in PHP?

Question

I have a an array like below:

$array = Array
        (
            '0' => Array
                (
                    'num1' => 123,
                    'num2' => 456,
                ),
            '1' => Array
                (
                    'num3' => 789,
                    'num4' => 147,
                ),
            '2' => Array
                (
                    'num5' => 258,
                    'num6' => 369,
                    'num7' => 987,
                ),
        );

I want to count number of elements i.e. from num1 to num7 means I want output 7. How can i do this without using loop?

Chetan Ameta · Accepted Answer · 2016-04-11T06:09:56.383

5

use array_sum and array_map function together.

try below solution:

$array = Array
(
    '0' => Array
    (
        'num1' => 123,
        'num2' => 456,
    ),
    '1' => Array
    (
        'num3' => 789,
        'num4' => 147,
    ),
    '2' => Array
    (
        'num5' => 258,
        'num6' => 369,
        'num7' => 987,
    ),
);

echo $total = array_sum(array_map("count", $array));

output

alternat way can be:

echo count($array, COUNT_RECURSIVE) - count($array); //output: 7

edited Apr 11 '16 at 06:09

answered Apr 11 '16 at 05:57

Chetan Ameta

7,696
3
29
44

1

Really Nice and helpful Answer. You are faster than me. – Pawan Kumar Sharma Apr 11 '16 at 06:01
1

I was going to say use `array_walk_recursive` , but second solution is perfect. – Mohammad Niknam Apr 11 '16 at 06:02
1

yes but in second answer if array have any associative key(not array eg `'3' => 10`) then the output will be wrong that is why i mentioned it as alternate way, but `array_map` will work perfectly – Chetan Ameta Apr 11 '16 at 06:05

score 2 · Answer 2 · answered Apr 11 '16 at 06:07

2

Using array_sum function

$totalarray = array_sum(array_map("count", $array));

Using Foreach Loop

$count = 0;
foreach( $array as $arrayVal){
    $count += count($arrayVal);
}

answered Apr 11 '16 at 06:07

Ritesh d joshi

813
1
12
15

How to count number of elements of a multidimensional array without using loop in PHP?

2 Answers2