Question

Read towns and incomes (on a single line) and print an array holding the total income for each town

Print the towns in their natural order as object properties.

Examples:

 

 

Answer 1

This is my solution:

<?php

$input = explode(', ', readline());

$towns = [];

for ($i = 0; $i < count($input); $i += 2) {
    if (!isset($towns[$input[$i]])) {
        $towns[$input[$i]] = 0;
    }
    $income = intval($input[$i + 1]);
    $towns[$input[$i]] += $income;
}
foreach ($towns as $key => $value) {
    echo "$key => $value" . PHP_EOL;
}