Online PHP editor | refs for GRjjM

<?php $secret = 'MB4CMFCCGLNNAC4WR5AOGFVJZR4IIAD7'; function binaryChunk($binaryString, $bits) { $binaryString = chunk_split($binaryString, $bits, ' '); if (substr($binaryString, (strlen($binaryString)) - 1) == ' ') { $binaryString = substr($binaryString, 0, strlen($binaryString)-1); } return explode(' ', $binaryString); } function base32decode($base32String){ $alphabet = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ234567='; // Only work in upper cases $base32String = strtoupper($base32String); // Remove anything that is not base32 alphabet $pattern = '/[^A-Z2-7]/'; $base32String = preg_replace($pattern, '', $base32String); if (strlen($base32String) == 0) { // Gives an empty string return ''; } $base32Array = str_split($base32String); $string = ''; foreach ($base32Array as $str) { $char = strpos($alphabet, $str); // Ignore the padding character if ($char !== 32) { $string .= sprintf('%05b', $char); } } while (strlen($string) %8 !== 0) { $string = substr($string, 0, strlen($string)-1); } $binaryArray = binaryChunk($string, 8); $realString = ''; foreach ($binaryArray as $bin) { // Pad each value to 8 bits $bin = str_pad($bin, 8, 0, STR_PAD_RIGHT); // Convert binary strings to ASCII $realString .= chr(bindec($bin)); } return $realString; } $bin = base32decode($secret); $rnd = bin2hex($bin); echo $rnd;