wpsnoop Function add_query_vars() conflicts found in 4 plugins

A php function called add_query_vars() is used in 4 wordpress plugins/themes and could produce a potential conflict if the wrong combination of themes and plugins is used on your site.

To prevent this from happening developers are encouraged to use namespaces and scopes that isolate their functions from colliding with other functions but this is not always done correctly.

We hope this reference helps you to find PHP Fatal error: Cannot redeclare add_query_vars()

The following 4 plugins register a function called add_query_vars():

Plugin
Steem Hype
ODude Date (Calendar)
ODude Date (Calendar)
Witlee for WP