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@ 2014-08-13T22:04:40Z

<?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 git.master, git.master_jit, rfc.property-hooks: 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

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2020-03-21 RFC: Is_Literal - declined
2020-12-04 Enumerations - included in PHP 8.1
2018-06-15 Typed Properties v2 - implemented in PHP 7.4
2016-08-12 Object typehint - included in PHP 7.2
2016-08-14 Arrow functions - withdrawn
2016-05-29 array_change_keys() - withdrawn
2016-04-19 Lexical scope support for anonymous classes - suspended
2016-04-17 Functional Interfaces - declined
2016-03-16 Typed Properties - superseded in favor of Typed Properties 2.0
2015-08-27 Callable Prototypes - declined
2015-05-01 Short Closures - declined / withdrawn in favor of Arrow Functions
2015-02-18 Scalar type hints v5 - included in PHP 7
2015-02-14 Union Types - declined
2013-09-22 Anonymous classes - included in PHP 7

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