# prepare original data for the database:

$utf8_string = decode( "euc-jp", $euc_string );

# store that to the database, then some time later,
# fetch it back, and convert back to euc-jp:

from_to( $db_octets, "utf8", "euc-jp" );

# now, $db_octets should be readable in an euc-jp display.