public function testGetOffsetBySeconds() { $this->assertEquals('+00:00', DateTime::getOffsetBySeconds(0)); $this->assertEquals('+01:00', DateTime::getOffsetBySeconds(3600)); $this->assertEquals('-01:00', DateTime::getOffsetBySeconds(-3600)); $this->assertEquals('+01:30', DateTime::getOffsetBySeconds(5400)); $this->assertEquals('-01:30', DateTime::getOffsetBySeconds(-5400)); $this->assertEquals('+24:00', DateTime::getOffsetBySeconds(86400)); $this->assertEquals('-24:00', DateTime::getOffsetBySeconds(-86400)); }