<?php
function gdr_encode($val) {
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!=';
$base = strlen($chars);
$str = '';
while ($val > 0) {
$str .= $chars[$val % $base];
$val = (int)($val / $base);
}
return $str;
}
function gdr_decode($str) {
$chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!=';
$base = strlen($chars);
$map = array();
for ($i=0; $i<$base; $i++) {
$map[$chars[$i]] = $i;
}
//echo print_r($map, false) . "\n";
$val = 0;
for ($i=0; $i<strlen($str); $i++) {
$val *= $base;
$char = $str[$i];
echo "{$str[$i]}\n";
$val += (int)$map[$str[$i]];
}
return $val;
}
//$vals = array(0, 1, 99, 100, 255, 256, 999, 1000, 9999, 10000, 65535, 65536, 99999, 100000, 999999, 1000000, 4294967295, 4294967296);
$vals = array(1);
foreach ($vals as $val) {
$enc = json_encode(gdr_encode($val));
$dec = json_encode(gdr_decode($enc));
$val = json_encode($val);
if (strlen($enc) > strlen($val)) {
echo "$enc $val WORSE\n";
} else if (strlen($enc) == strlen($val)) {
echo "$enc $val EQUAL\n";
} else {
echo "$enc $val\n";
}
}
preferences:
40.05 ms | 402 KiB | 5 Q