experimentos base58

b58.php

<?php
define('ALPHABET', '123456789ABCDEFGHJKLMNPQRSTUVWXYZabcdefghijkmnopqrstuvwxyz');

function numT58($num)
{
    $acc = '';
    while ($num >= 58) {
        $mod = $num % 58;
        $num = intval(floor($num / 58));

        echo $mod . ' :';
        echo ALPHABET[$mod], "\t", $num, "\n";
        $acc = ALPHABET[$mod] . $acc;
    }
    $acc = ALPHABET[$num] . $acc;
    echo $acc;
}

function b58dec(string $b58)
{
    echo $b58, "\n";
    $acc = 0;
    $len = $i = strlen($b58);
    while ($i-- > 0) {
        $char = $b58[$i];
        $num = strpos(ALPHABET, $char);
        $power = $len - $i - 1;
        $up = $num * pow(58, $power);

        $acc += $up;

        echo json_encode(
            compact('i', 'char', 'num',
                'power', 'up', 'acc')
        ), "\n";
    }
    echo $acc, "\n";
    echo dechex($acc);
}

$num1 = 2064940092;

$b58r = '49UMkP';

while( true ){ if( strlen($num) < 2 ) { if( intval($num) <= 0 ) { break; } } $rem = bcmod($num, $base); $rep = $basestr[intval($rem)] . $rep; $num = bcdiv(bcsub($num, $rem), $base); } return $rep;

sha256(hex): 4569e91f1a2f6e1c3cc085a143e404db91591c2b9c25d1b12c1d88f0bb4c2bad
base58:      5fxoLz932qGvY57xjSq9akM9mp5LaQzjggNxRnWC6dpY