protected function hourCeil($timestamp)
    {
        return mktime(date('H', $timestamp) + 1, 0, 0, date('n', $timestamp), date('j', $timestamp), date('Y', $timestamp));
    }
protected function hourCeil($timestamp)
    {
        return mktime(date('H', $timestamp) + 1, 0, 0, date('n', $timestamp), date('j', $timestamp), date('Y', $timestamp));
    }
protected function hourCeil ( $ timestamp ) { return mktime ( date ( 'H' , $ timestamp ) + 1 , 0 , 0 , date ( 'n' , $ timestamp ) , date ( 'j' , $ timestamp ) , date ( 'Y' , $ timestamp ) ) ; }
Returns the next full hour

@param int $timestamp
@return int
Returns the next full hour