5 views 
Summery Summery
Uses bitwise operators instead of table-lookups to turn 8-bit integers into 6-bit integers.
Syntax Syntax
Parameters Parameters
- $src
-
(Required)
Return Return
(string)
Source Source
File: wp-includes/sodium_compat/src/Core/Base64/UrlSafe.php
protected static function encode6Bits($src)
{
$diff = 0x41;
// if ($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);
}