Iterating over std::map in PHP with SWIG

Question

I am using SWIG to wrap a function that returns an std::map in PHP.

In the PHP code, I need to iterate over the elements of the map.

Thw SWIG library provides support for std::map with the std_map.i interface file, but only the following methods are wrapped:

 clear()
 del($key)
 get($key)
 has_key($key)
 is_empty()
 set($key, $x)
 size()

How can I iterate over the elements of the map? Would I need to extend the std_map.i file with some sort of wrappers for iterators and begin() and end()?

Rorie

Challenge accepted. The "right" thing to do is implement PHP's iterator interface but it looks like that might be a bit tricky. I'll have a think – Bankbook

Answer 1

As @awoodland said you will have to implement the iterator interface.

Here is another question on stackoverflow. Although it is java it can give you a better idea of what you are looking for:

No iterator for Java when using SWIG with C++'s std::map

Kalakalaazar