- base_convert: documentation ( source)
- str_split: documentation ( source)
<?php
$KEY_BASE = str_split("0123456789abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ");
$BASE = 62;
$num = '11112887';
//$num = intval($num);
//$num = array_map('intval',str_split($num));
$result = '';
$remainder = 0;
/*
foreach ($num as $digit) {
$remainder = $digit%$BASE;
echo 'remainder '.$remainder;
echo 'key remainder '.$KEY_BASE[$remainder];
$result.=$KEY_BASE[$remainder];
//echo $digit;
}*/
//echo $result;
echo base_convert($num,10,62);