insert_batch() not working completely

Thank you so much for your reply. insert_batch() works fine for the array which you have shared, also i have tried earlier as well. But i would like to know the way for how can I use the insert_batch() for different different array keys as i have given the array.
If there is not any solution for now then fine. But, If point seems to be valid then please consider my point as bug/enhancement.
No further comment needed.
Thank you very much again.