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Informations about the package null-object
Null Object for PHP
Allows the user to call the null object which handles all calls silently and returns sensible defaults. The returned object can be type cast to return the following values:
- String - ""
- Integer - 0
- Float or Real - 0.0
- Array - []
- Boolean - False
Installation
Run the following to install:
Usage
The null object can be created in one of the following methods:
- Named constructor:
- Helper function:
Both will return an instance of the class. Calls to any methods or members on this class will return the defaults as mentioned in the section above.
Example
Quirks
PHP does not allow modifying the behaviour of casting a class to boolean. A simple hack is to use the SimpleXMLElement class which can return false when passed an empty XML tag.
