JakubTesarek

<?php
/*
  Objectives:
    - Create PHP script that will translate input data to expected output from example below.
    - Calculate time complexity of your script
    bonus: Implement solution that will not use pass-by-reference and will not use objects
*/

$input = [
    'A' => 1,

JakubTesarek

# if not running interactively, don't do anything
[ -z "$PS1" ] && return

# Detect platform
platform='unknown'
unamestr=`uname`
if [[ "$unamestr" == 'Linux' ]]; then
   platform='linux'
elif [[ "$unamestr" == 'FreeBSD' ]]; then
   platform='freebsd'

datayja

<?php
function array_group_by (array $array, callable $mapping) 
{
	$buckets = [];
	foreach ($array as $item) {
		$key = $mapping($item);
		if (!isset($buckets[$key])) {
			$buckets[$key] = [$item];
		} else {
			$buckets[$key][] = $item;