addMonths() addMonths(integer $months) : static Get a new Range object for the specified number of months difference. Parameters integer $months The number of months to add Returns static
subMonths() subMonths(integer $months) : static Get a new Range object for the specified number of months difference. Parameters integer $months The number of months to subtract Returns static
addYears() addYears(integer $years) : static Get a new Range object for the specified number of years difference. Parameters integer $years The number of years to add Returns static
subYears() subYears(integer $years) : static Get a new Range object for the specified number of years difference. Parameters integer $years The number of years to subtract Returns static