Show total count of WordPress post pingbacks, trackbacks within admin post columns

This snippet will add a new column called counts within the WordPress admin post listing that will display the total number of pingbacks, trackbacks for each post.

Instructions
Add this to your functions.php file.

Snippet Info

Tested with Wordpress v. 4.7.1
Last Reviewed: 01.09.2017
Review Status: Needs Review

Show total count of WordPress post pingbacks, trackbacks within admin post columns
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