How to calculate sum of an array in PHP

You can use the PHP array_sum() function to calculate the sum of all numeric values in an array. As shown in the following example:
 
How to calculate sum of an array in PHP
 
<?php
 $arr1 = array(1, 2, 3);
 $arr2 = array("a" => 1, "b" => 2, "c" => 3);
 echo array_sum($arr1). '<br />';
 echo array_sum($arr2); 
?>
 
Output:
6
6