| Package | Description | 
|---|---|
| com.caucho.quercus.env | 
| Modifier and Type | Class and Description | 
|---|---|
| class  | DefaultValueRepresents a PHP default value. | 
| class  | NullThisValueRepresents a PHP null value, used for | 
| class  | QuercusClassRepresents a Quercus runtime class. | 
| class  | UnexpectedValue | 
| class  | UnsetValueRepresents a PHP null value. | 
| Modifier and Type | Field and Description | 
|---|---|
| static NullValue | NullValue. NULL | 
| Modifier and Type | Method and Description | 
|---|---|
| static NullValue | NullValue. create()Returns the null value singleton. |