As you can see on the image, the author information is being shown only for one page, not others, why not all pages are showing the author information? Do I need to do anything additionally to get it done?
Following is the result of structured data tool preview:
Now see what really happening on actual google search result(search with the title "How To Work With Codeigniter Caching In PHP" and mine is the 9th result on first page):
So, what about this? Why are they different?