get_attached_file()

描述

By default the path will go through the ‘get_attached_file’ filter, but passing a true to the $unfiltered argument of get_attached_file() will return the file path unfiltered.

The function works by getting the single post meta name, named ‘_wp_attached_file’ and returning it. This is a convenience function to prevent looking up the meta name and provide a mechanism for sending the attached filename through a filter.