function base32_decode($input, $outputLength)
{
$inputLength = strlen($input);
// echo "legnth is: $inputLength output:$outputLength\n$input\n";
$bytes = 0;
$currentByte = 0;
$output = '';
for ($offset = 0; $offset < $inputLength && $bytes < $outputLength; $offset += 8) {
// print "offset: $offset\n";
$output[$bytes] = decode_bits($input[$offset + 0]) << 3;
$currentByte = decode_bits($input[$offset + 1]);
$output[$bytes] += $currentByte >> 2;
$output[$bytes + 1] = ($currentByte & 0x3) << 6;
if ($input[$offset + 2] == '=') {
// print "Return + 2 bytes:$bytes\n";
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 2]) << 1;
$currentByte = decode_bits($input[$offset + 3]);
$output[$bytes] += $currentByte >> 4;
$output[$bytes + 1] = $currentByte << 4;
$z = $input[$offset + 4];
// print "off4 = $z\n";
if ($input[$offset + 4] == '=') {
// print "Return + 4 bytes:$bytes\n";
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$currentByte = decode_bits($input[$offset + 4]);
$output[$bytes] += $currentByte >> 1;
$output[$bytes + 1] = $currentByte << 7;
if ($input[$offset + 5] == '=') {
// print "Return + 5 bytes:$bytes\n";
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 5]) << 2;
$currentByte = decode_bits($input[$offset + 6]);
$output[$bytes] += $currentByte >> 3;
$output[$bytes + 1] = ($currentByte & 0x7) << 5;
if ($input[$offset + 7] == '=') {
// print "Return + 7 bytes:$bytes\n";
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 7]) & 0x1f;
$bytes++;
}
return arrayToString($output, $bytes);
}
function base32_decode($input, $outputLength)
{
$inputLength = strlen($input);
$bytes = 0;
$currentByte = 0;
$output = '';
for ($offset = 0; $offset < $inputLength && $bytes < $outputLength; $offset += 8) {
$output[$bytes] = decode_bits($input[$offset + 0]) << 3;
$currentByte = decode_bits($input[$offset + 1]);
$output[$bytes] += $currentByte >> 2;
$output[$bytes + 1] = ($currentByte & 0x3) << 6;
if ($input[$offset + 2] == '=') {
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 2]) << 1;
$currentByte = decode_bits($input[$offset + 3]);
$output[$bytes] += $currentByte >> 4;
$output[$bytes + 1] = $currentByte << 4;
if ($input[$offset + 4] == '=') {
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$currentByte = decode_bits($input[$offset + 4]);
$output[$bytes] += $currentByte >> 1;
$output[$bytes + 1] = $currentByte << 7;
if ($input[$offset + 5] == '=') {
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 5]) << 2;
$currentByte = decode_bits($input[$offset + 6]);
$output[$bytes] += $currentByte >> 3;
$output[$bytes + 1] = ($currentByte & 0x7) << 5;
if ($input[$offset + 7] == '=') {
return arrayToString($output, $bytes + 1);
} else {
$bytes++;
}
$output[$bytes] += decode_bits($input[$offset + 7]) & 0x1f;
$bytes++;
}
return arrayToString($output, $bytes);
}
