Online PHP editor | rfc for Q2IYF

@ 2014-08-13T23:58:28Z

<?php

function gdr_encode($val) {
	$bin = '';
	while ($val > 0) {
		$bin .= chr($val & 0xFF);
		$val >>= 8;
	}
	return str_replace(array('/', '='), array('_', ''), base64_encode($bin));
}

function gdr_decode($str) {
	$bin = base64_decode(str_replace('_', '/', $str));
	$val = 0;
	for ($i=strlen($bin)-1; $i>=0; $i--) {
		$val |= ord($bin[$i]) << $i*8;
	}
	return $val;
}

function test_enc($val) {
	$enc = gdr_encode($val);
	$dec = gdr_decode($enc);
	if ($val === $dec) {
		echo "$enc $val\n";
	} else {
		echo "$enc $val ERROR: gdr_decode($enc) == $dec\n";
	}
}

foreach (array(0, 1, 99, 100, 255, 256, 999, 1000, 9999, 10000, 65535, 65536, 99999, 100000, 999999, 1000000, 4294967295, 4294967296) as $val) {
	test_enc($val);
}echo "\n";
/*
// seed rng for consistent values
if (phpversion() < '5.2.1') { die('old rng'); }
mt_srand(42);

for ($i=0; $i<63; $i++) {
	$val = 1<<$i;
	$val += mt_rand(0, $val/2);
	test_enc($val);
}
*/

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught Error: Undefined constant " 65535" in /in/Q2IYF:31 Stack trace: #0 {main} thrown in /in/Q2IYF on line 31
Process exited with code 255.

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2020-03-21 RFC: Is_Literal - declined
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