Using WordPress ‘get_real_file_to_edit()’ PHP function
Get the real filesystem path to a file to edit within the admin.
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Using WordPress ‘is_time()’ PHP function
The article provides an overview of the WordPress `is_time()` function, which determines whether the query is for a specific time or not
Using WordPress ‘is_rtl()’ PHP function
Determines whether the current locale is right-to-left (RTL).
Using WordPress ‘is_multi_author()’ PHP function
Determines whether this site has more than one author.