get_post_type() is incorrect

[rmccue]

The inline documentation for get_post_type() is incorrect in stating that the function uses the current post if none is specified.

Either the function needs to be changed to use the current post, or the inline documentation needs to be correct. As nacin pointed out, the function is @since 2.1.0, so the former is most likely a bad idea.

I think the function should be deprecated in favour of a function that has the correct functionality, and the old function's documentation should be corrected.

Corrected version of the original function, so it matches the phpDoc

Someone on the ​forums mentioned that it stopped working after upgrading to 2.7.1. Perhaps the format of $posts was changed?

Change the phpDoc's param name to match new param

(In [14071]) Update get_post_type() to perform on the current global post if none specified. Update PHPDoc to reflect changes. Props rmccue. Fixes #12827