PHP – how count percent of each value in array

In PHP, I have an array:

$a = array(10, 15, 20, 25, 30);

I want to add 5% to each element of the array $a, so that it looks like this:

$a = array(10.5, 15.75, 21, 26.25, 31.5);

I do not want to use foreach.

Answer

Try this

<?php 
$a = array(10, 15, 20, 25, 30);;

$output = array_map(function($val) { return $val + ($val*5/100); }, $a);

print_r($output);

    ?>

Output :-

Array
(
    [0] => 10.5
    [1] => 15.75
    [2] => 21
    [3] => 26.25
    [4] => 31.5
)