php extension, base32 encoding / decoding
/path/to/php/bin/phpize
./configure --enable-base32 --with-php-config=/path/to/php/bin/php-config
make
make intall
vim php.ini && enable base32.so
/path/to/php/bin/php -r "var_dump(base32_decode(base32_encode('1234567890')));"