Add hash, className & id methods for Php::Value #120
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If you want to use Php::Value as a key of unordered_map, you can use this method to implement the hash function. But it only works correctly when patched #114.
This method can return the calss name of the object. and return empty string when the value is not an object.
This method return an id of the object. It is like spl_object_hash, it return empty string when the value is not an object.
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If you want to use Php::Value as a key of unordered_map, you can use
hashmethod to implement the hash function. But it only works correctly when patched #114.classNamemethod can return the calss name of the object. and return empty string when the value is not an object.idmethod return an id of the object. It is like spl_object_hash, it return empty string when the value is not an object.