/**
* Compares the month of the current date against the given $date month
* Returns 0 if equal, -1 if current month is earlier or 1 if current month is later
* For example: 10.03.2000 -> 15.03.1950 -> 0
*
* @param Piwik_Date $month Month to compare
* @return integer 0 = equal, 1 = later, -1 = earlier
*/
function compareMonth( Piwik_Date $date )
{
$currentMonth = date('n', $this->getTimestamp());
$toCompareMonth = date('n', $date->getTimestamp());
if( $currentMonth == $toCompareMonth)
{
return 0;
}
if( $currentMonth < $toCompareMonth)
{
return -1;
}
return 1;
}