[virtual@croatia]

Thanks for saving my time. Here is the code for 4.1.17 version, which is much shorter and simpler:

{assign var="paren" value=$order.payment_method|strpos:' ('}
{assign var="paymentMethod" value=$order.payment_method|substr:0:$paren}
{if $order.payment_method eq 'Credit Card'}
    {php}
    global $order;
    #
    # Custom function by moneysaver67
    # Parse out the info after a given label
    #
    if( !function_exists( 'parseAfterLabel' ) )
    {
        function parseAfterLabel( $label, $details )
        {
            // Force to one line
            $details = preg_replace( '/\n/',' ', $details );

            if( !stristr( $details, $label ) )
            {    
                $return = '';
            }
            else
            {            
                $pattern = '/^.*'.$label.'\s{0,}(.*)\s{0,}.*$/';
                $chunk = preg_replace( $pattern, '${1}', $details );

                // return everything prior to first space (auth code)
                $return = substr( $chunk, 0, strpos( $chunk, ' ' ) );        
            }
            return $return;
        }            
    }    
    
    // Do you store CC info in the details column?
    if( $GLOBALS[store_cc] )
    {
        $cc_type = parseAfterLabel( '{CardType}:', $order["details"]);
        $cc_num = parseAfterLabel( '{CardNumber}:', $order["details"]);
        $cc_mask = str_repeat( 'x', strlen( $cc_num ) );
        $cc_mask = substr( $cc_mask, 0, strlen( $cc_mask ) -4 ) . substr( $cc_num, -4, 4 );
        if (!empty($cc_type) || !empty($cc_mask))
            echo (': ' .$cc_type. ' ' . $cc_mask);
    }
    {/php}
{/if}