public function inc($property, $value = 1) {
		if (isset($this->_data[$property])) {
			$this->_data[$property] += $value;
		} else {
			$this->_data[$property] = $value;
		}
		
		$this->_changed[$property] = true;
		
		return $this->_data[$property];
	}
public function inc($property, $value = 1) {
		if (isset($this->_data[$property])) {
			$this->_data[$property] += $value;
		} else {
			$this->_data[$property] = $value;
		}
		
		$this->_changed[$property] = true;
		
		return $this->_data[$property];
	}
public function inc ( $ property , $ value = 1 ) { if ( isset ( $ this -> _data [ $ property ] ) ) { $ this -> _data [ $ property ] += $ value ; } else { $ this -> _data [ $ property ] = $ value ; } $ this -> _changed [ $ property ] = true ; return $ this -> _data [ $ property ] ; }
Increase a value of the property
Property will be created if not exists

@param  string $property
@param  int    $value
@return int
Increase a value of the property Property will be created if not exists