Update wp-event-manager-functions.php

[johnwebman]

The existing event listing in the admin panel does not filter by date correctly for events. The filter is designed for ordinary posts that have no concept of a start or end date and currently only offers the publish date for filtering.

Ideally you'd want to filter by start date. for events. This update does just that.

The new code identifies all events with a valid start date and creates a unique dropdown for each month-year. Selecting a month-year and hitting the filter button will bring back just the events with the corresponding month-year start date.

[johnwebman]

@ritakikani
You can safely ignore the static code analysis. I think this is a classic case of AI not being that intelligent.
The issues suggested by the static code review can be broken down as follows:

1. You can't escape html code and then render it. It's just not possible. So that one is a red herring. In any case we're not dealing with any user input so there is no XSS or security issue.
2. There's nothing wrong with printf in this circumstance. I could have used echo or printr and these also would have been ok.
3. It suggests I should use placeholders in the SQL query, but that's exactly what I've done. So it's missed all that. In any case, this code is not injectable so the security issue is irrelevant.

A static code review can often fail as it doesn't have the context of the environment that the code is running in, so you quite often get false negatives. I think your reviewers will agree that the static code analysis can be ignored in this instance.