Function declarations follow the "one true brace"
    convention:
    
| function fooFunction($arg1, $arg2 = '')
{
    if (condition) {
        statement;
    }
    return $val;
} | 
   
    Arguments with default values go at the end of the argument list.
    Always attempt to return a meaningful value from a function if one
    is appropriate. Here is a slightly longer example:
    
| function connect(&$dsn, $persistent = false)
{
    if (is_array($dsn)) {
        $dsninfo = &$dsn;
    } else {
        $dsninfo = DB::parseDSN($dsn);
    }
    if (!$dsninfo || !$dsninfo['phptype']) {
        return $this->raiseError();
    }
    return true;
} |