wpsnoop Function user_id() conflicts found in 2 plugins

A php function called user_id() is used in 2 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 user_id()

The following 2 plugins register a function called user_id():

Plugin
Simply Instagram
USER ID