: str_replace(): Passing null to parameter #2 ($replace) of type array|string is deprecated in
* Class ParagonIE_Sodium_Core_Base64UrlSafe
* Copyright (c) 2016 - 2018 Paragon Initiative Enterprises.
* Copyright (c) 2014 Steve "Sc00bz" Thomas (steve at tobtu dot com)
class ParagonIE_Sodium_Core_Base64_UrlSafe
// COPY ParagonIE_Sodium_Core_Base64_Common STARTING HERE
* Base64 character set "[A-Z][a-z][0-9]+/"
public static function encode($src)
return self::doEncode($src, true);
* Encode into Base64, no = padding
* Base64 character set "[A-Z][a-z][0-9]+/"
public static function encodeUnpadded($src)
return self::doEncode($src, false);
* @param bool $pad Include = padding?
protected static function doEncode($src, $pad = true)
$srcLen = ParagonIE_Sodium_Core_Util::strlen($src);
// Main loop (no padding):
for ($i = 0; $i + 3 <= $srcLen; $i += 3) {
/** @var array<int, int> $chunk */
$chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 3));
self::encode6Bits( $b0 >> 2 ) .
self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
self::encode6Bits((($b1 << 2) | ($b2 >> 6)) & 63) .
self::encode6Bits( $b2 & 63);
// The last chunk, which may have padding:
/** @var array<int, int> $chunk */
$chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i));
self::encode6Bits($b0 >> 2) .
self::encode6Bits((($b0 << 4) | ($b1 >> 4)) & 63) .
self::encode6Bits(($b1 << 2) & 63);
self::encode6Bits( $b0 >> 2) .
self::encode6Bits(($b0 << 4) & 63);
* decode from base64 into binary
* Base64 character set "./[A-Z][a-z][0-9]"
* @param bool $strictPadding
* @psalm-suppress RedundantCondition
public static function decode($src, $strictPadding = false)
$srcLen = ParagonIE_Sodium_Core_Util::strlen($src);
if (($srcLen & 3) === 0) {
if ($src[$srcLen - 1] === '=') {
if ($src[$srcLen - 1] === '=') {
if (($srcLen & 3) === 1) {
throw new RangeException(
if ($src[$srcLen - 1] === '=') {
throw new RangeException(
$srcLen = ParagonIE_Sodium_Core_Util::strlen($src);
// Main loop (no padding):
for ($i = 0; $i + 4 <= $srcLen; $i += 4) {
/** @var array<int, int> $chunk */
$chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, 4));
$c0 = self::decode6Bits($chunk[1]);
$c1 = self::decode6Bits($chunk[2]);
$c2 = self::decode6Bits($chunk[3]);
$c3 = self::decode6Bits($chunk[4]);
((($c0 << 2) | ($c1 >> 4)) & 0xff),
((($c1 << 4) | ($c2 >> 2)) & 0xff),
((($c2 << 6) | $c3) & 0xff)
$err |= ($c0 | $c1 | $c2 | $c3) >> 8;
// The last chunk, which may have padding:
/** @var array<int, int> $chunk */
$chunk = unpack('C*', ParagonIE_Sodium_Core_Util::substr($src, $i, $srcLen - $i));
$c0 = self::decode6Bits($chunk[1]);
$c1 = self::decode6Bits($chunk[2]);
$c2 = self::decode6Bits($chunk[3]);
((($c0 << 2) | ($c1 >> 4)) & 0xff),
((($c1 << 4) | ($c2 >> 2)) & 0xff)
$err |= ($c0 | $c1 | $c2) >> 8;
} elseif ($i + 1 < $srcLen) {
$c1 = self::decode6Bits($chunk[2]);
((($c0 << 2) | ($c1 >> 4)) & 0xff)
$err |= ($c0 | $c1) >> 8;
} elseif ($i < $srcLen && $strictPadding) {
throw new RangeException(
'Base64::decode() only expects characters in the correct base64 alphabet'
// COPY ParagonIE_Sodium_Core_Base64_Common ENDING HERE
* Uses bitwise operators instead of table-lookups to turn 6-bit integers
* 0x41-0x5a, 0x61-0x7a, 0x30-0x39, 0x2b, 0x2f
protected static function decode6Bits($src)
// if ($src > 0x40 && $src < 0x5b) $ret += $src - 0x41 + 1; // -64
$ret += (((0x40 - $src) & ($src - 0x5b)) >> 8) & ($src - 64);
// if ($src > 0x60 && $src < 0x7b) $ret += $src - 0x61 + 26 + 1; // -70
$ret += (((0x60 - $src) & ($src - 0x7b)) >> 8) & ($src - 70);
// if ($src > 0x2f && $src < 0x3a) $ret += $src - 0x30 + 52 + 1; // 5
$ret += (((0x2f - $src) & ($src - 0x3a)) >> 8) & ($src + 5);
// if ($src == 0x2c) $ret += 62 + 1;
$ret += (((0x2c - $src) & ($src - 0x2e)) >> 8) & 63;
// if ($src == 0x5f) ret += 63 + 1;
$ret += (((0x5e - $src) & ($src - 0x60)) >> 8) & 64;
* Uses bitwise operators instead of table-lookups to turn 8-bit integers
protected static function encode6Bits($src)
// if ($src > 25) $diff += 0x61 - 0x41 - 26; // 6
$diff += ((25 - $src) >> 8) & 6;
// if ($src > 51) $diff += 0x30 - 0x61 - 26; // -75
$diff -= ((51 - $src) >> 8) & 75;
// if ($src > 61) $diff += 0x2d - 0x30 - 10; // -13
$diff -= ((61 - $src) >> 8) & 13;
// if ($src > 62) $diff += 0x5f - 0x2b - 1; // 3
$diff += ((62 - $src) >> 8) & 49;
return pack('C', $src + $diff);
It is recommended that you Edit text format, this type of Fix handles quite a lot in one request
