<?php
function pack_encode($format, $val) {
$b64 = base64_encode(pack($format, $val));
return str_replace(array('/', '='), array('_', ''), $b64);
}
function pack_decode($format, $val) {
$b64 = str_replace('_', '/', $val); // un-padded
return unpack($format, base64_decode($b64, false));
}
function pack_encode_uint16($val) {
return pack_encode('S', $val);
}
function pack_encode_uint32($val) {
return pack_encode('N', $val);
}
function pack_decode_uint16($val) {
return pack_decode('S', $val);
}
function pack_decode_uint32($val) {
return pack_decode('N', $val);
}
$max = 32767;
$n = 20;
$step = intval($max/$n);
for ($i=0; $i<=$n; $i++) {
$val = $i*$step;
$uint16 = pack_encode_uint16($val);
$uint32 = pack_encode_uint32($val);
$str = base64_encode(strval($val));
echo "$uint16 $uint32 $str $val\n";
}
- Output for 4.3.0 - 4.3.11, 4.4.0 - 4.4.9, 5.0.0 - 5.0.5, 5.1.0 - 5.1.6, 5.2.0 - 5.2.17, 5.3.0 - 5.3.29, 5.4.0 - 5.4.45, 5.5.24 - 5.5.35, 5.6.8 - 5.6.28, 7.0.0 - 7.0.20, 7.1.0 - 7.1.25, 7.2.0 - 7.2.33, 7.3.0 - 7.3.33, 7.4.0 - 7.4.33, 8.0.0 - 8.0.30, 8.1.0 - 8.1.28, 8.2.0 - 8.2.18, 8.3.0 - 8.3.6
- AAA AAAAAA MA== 0
ZgY AAAGZg MTYzOA== 1638
zAw AAAMzA MzI3Ng== 3276
MhM AAATMg NDkxNA== 4914
mBk AAAZmA NjU1Mg== 6552
_h8 AAAf_g ODE5MA== 8190
ZCY AAAmZA OTgyOA== 9828
yiw AAAsyg MTE0NjY= 11466
MDM AAAzMA MTMxMDQ= 13104
ljk AAA5lg MTQ3NDI= 14742
_D8 AAA__A MTYzODA= 16380
YkY AABGYg MTgwMTg= 18018
yEw AABMyA MTk2NTY= 19656
LlM AABTLg MjEyOTQ= 21294
lFk AABZlA MjI5MzI= 22932
+l8 AABf+g MjQ1NzA= 24570
YGY AABmYA MjYyMDg= 26208
xmw AABsxg Mjc4NDY= 27846
LHM AABzLA Mjk0ODQ= 29484
knk AAB5kg MzExMjI= 31122
+H8 AAB_+A MzI3NjA= 32760
preferences:
216.74 ms | 407 KiB | 325 Q