sum of associative array in php

1<?php
2$items = [
3    ['label' => 'cake', 'name' => 'Cake', 'price' => 150],
4    ['label' => 'pizza', 'name' => 'Pizza', 'price' => 250],
5    ['label' => 'puff', 'name' => 'Veg Puff', 'price' => 20],
6    ['label' => 'samosa', 'name' => 'Samosa', 'price' => 14]
7];
8
9$arrSum = array_sum(array_column($items, 'price', 'name'));
10print "Sum of Array : ".$arrSum."<br/>";
11?>

1<?php
2$a=array(5,15,25);
3echo array_sum($a);
4?>

1<?php
2$indexedArray = Array(20, 20, 5.5, "str");
3$associativeArray = Array(
4    1 => 20,
5    2 => 20,
6    3 => 5.5,
7    4 => "str"
8);
9
10echo array_sum($indexedArray) . "<br>"; // 45.5
11echo array_sum($associativeArray); // 45.5
12
13?>