Contents

<?php

function toDecimal($ternaryString, $base = 3)
{
    if (!preg_match('/^[0-2]+$/', $ternaryString)) {
        return 0;
    }

    $decimalNumber = 0;
    $numbers = str_split($ternaryString);
    $maxPower = count($numbers) - 1;
    for ($i = 0; $i <= $maxPower; ++$i) {
        $decimalNumber += $numbers[$maxPower-$i]*pow($base, $i);
    }

    return $decimalNumber;
}

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.180	tracks/php/exercises/trinary/example.php
trackler-2.2.1.179	tracks/php/exercises/trinary/example.php
trackler-2.2.1.178	tracks/php/exercises/trinary/example.php
trackler-2.2.1.177	tracks/php/exercises/trinary/example.php
trackler-2.2.1.176	tracks/php/exercises/trinary/example.php
trackler-2.2.1.175	tracks/php/exercises/trinary/example.php
trackler-2.2.1.174	tracks/php/exercises/trinary/example.php
trackler-2.2.1.173	tracks/php/exercises/trinary/example.php
trackler-2.2.1.172	tracks/php/exercises/trinary/example.php
trackler-2.2.1.171	tracks/php/exercises/trinary/example.php
trackler-2.2.1.170	tracks/php/exercises/trinary/example.php
trackler-2.2.1.169	tracks/php/exercises/trinary/example.php
trackler-2.2.1.167	tracks/php/exercises/trinary/example.php
trackler-2.2.1.166	tracks/php/exercises/trinary/example.php
trackler-2.2.1.165	tracks/php/exercises/trinary/example.php
trackler-2.2.1.164	tracks/php/exercises/trinary/example.php
trackler-2.2.1.163	tracks/php/exercises/trinary/example.php
trackler-2.2.1.162	tracks/php/exercises/trinary/example.php
trackler-2.2.1.161	tracks/php/exercises/trinary/example.php
trackler-2.2.1.160	tracks/php/exercises/trinary/example.php