public function Months()
{
if ($this->end === null) {
return -1;
}
if ($this->end->Before($this->start)) {
return -1;
}
if ($this->start->Month() == $this->end->Month() && $this->start->Year() == $this->end->Year()) {
$wholeMonth = new Datumsbereich($this->start->FirstOfMonth(), $this->start->LastOfMonth());
return $this->Length() / $wholeMonth->Length();
}
$startMonth = new Datumsbereich($this->start, $this->start->LastOfMonth());
$wholeMonth = new Datumsbereich($this->start->FirstOfMonth(), $this->start->LastOfMonth());
$total = $startMonth->Length() / $wholeMonth->Length();
$between = new Datumsbereich($this->start->NextFirst(), $this->end->PreviousLast());
$total += round($between->Length() / 30);
$endMonth = new Datumsbereich($this->end->FirstOfMonth(), $this->end);
$wholeMonth = new Datumsbereich($this->end->FirstOfMonth(), $this->end->LastOfMonth());
$total += $endMonth->Length() / $wholeMonth->Length();
if ($this->start->Day() == $this->end->Day() || $this->end->month() == 2 && $this->end->day() == $this->end->lastOfMonth()->day() && $this->end->day() < $this->start->day()) {
$total = (int) round($total);
}
return $total;
}
public function testMonate()
{
$bereich = new Datumsbereich(new Datum('2008-10-16'), new Datum('2008-12-15'));
$monate = $bereich->Monate();
$this->assertEquals(3, count($monate));
$first = reset($monate);
$this->assertEquals(new Datumsbereich(new Datum('2008-10-16'), new Datum('2008-10-31')), $first);
$next = next($monate);
$this->assertEquals(new Datumsbereich(new Datum('2008-11-01'), new Datum('2008-11-30')), $next);
$next = next($monate);
$this->assertEquals(new Datumsbereich(new Datum('2008-12-01'), new Datum('2008-12-15')), $next);
}
