Online PHP editor | rfc for OktGn

@ 2014-08-13T22:58:43Z

<?php

function pack_encode($val) {
	$str = array();
	while ($val > 0) {
		$str .= chr($val & 0xFF);
		$val = $val >> 8;
	}
	// "/" json-encodes poorly and "=" is padding
	return str_replace(
		array('/', '='),
		array('_', ''),
		base64_encode($str)
	);
}

for ($i=0; $i<256; $i++) {
	echo pack_encode($i*256) . "\n";
}

/*
$arr = array();
$packed = pack('N', 32767);
for ($i=0; $i<strlen($packed); $i++) {
	$arr[$i] = ord($packed[$i]);
}
print_r($arr);

function pack_encode($val) {
	$b64 = base64_encode(pack($format, $val));
	return str_replace(array('/', '='), array('_', ''), $b64); // "/" json-encodes poorly and "=" is padding
}

function pack_decode($bin) {
	$b64 = str_replace('_', '/', $bin); // un-padded
	$data = unpack('C'.(length($bin)/2), base64_decode($b64, false));
	$val = 0;
	foreach ($data as $v) {
		$val = ($val<<$width) | $v;
	}
	return $val;
}

$max = 32767;
$n = 20;
$step = intval($max/$n);

for ($i=0; $i<=$n; $i++) {
	$val = $i*$step;
	$enc = pack_encode($val);
	$dec = pack_decode($val);
	echo "$enc $dec $val\n";
}
*/

Output for git.master, git.master_jit, rfc.property-hooks: Fatal error: Uncaught TypeError: base64_encode(): Argument #1 ($string) must be of type string, array given in /in/OktGn:13 Stack trace: #0 /in/OktGn(13): base64_encode(Array) #1 /in/OktGn(18): pack_encode(0) #2 {main} thrown in /in/OktGn on line 13
Process exited with code 255.

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