Contents

<?php

function rebase(int $fromBase, array $digits, int $toBase)
{
    if (empty($digits) || $digits[0] == 0 || $fromBase <= 1 || $toBase <= 1) {
        return null;
    }

    $decTotal = 0;
    $ordered = array_reverse($digits);
    for ($i = 0; $i < count($digits); $i++) {
        $decTotal += $ordered[$i] * pow($fromBase, $i);
        if ($ordered[$i] >= $fromBase || $ordered[$i] < 0) {
            return null;
        }
    }

    $newArr = [];
    while ($decTotal >= $toBase) {
        $remainder = $decTotal % $toBase;
        $newArr[] = $remainder;
        $decTotal = floor($decTotal / $toBase);
    }
    $newArr[] = $decTotal;

    return array_reverse($newArr);
}

Version data entries

127 entries across 127 versions & 1 rubygems

Version	Path
trackler-2.2.1.159	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.158	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.157	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.156	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.155	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.154	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.153	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.152	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.151	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.150	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.149	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.148	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.147	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.146	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.145	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.144	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.143	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.142	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.141	tracks/php/exercises/all-your-base/example.php
trackler-2.2.1.140	tracks/php/exercises/all-your-base/example.php