Bulk Comment Delete – Alpha code for comments

I made an extra page for wp-admin that lets you bulk delete comments based on key words in post_author or post_content. If anyone reading is competent with SQL and wordpress I’d be grateful if you’d have a look at the “despam” download at https://www.sweavo.34sp.com/downloads
have a play with it and let me know what you think, but back up your comments table first!

The code isn’t conformant with the coding guidelines – I’ve only just become aware of them – but apart from that I’d appreciate any code review or user reviews. If anyone thinks it’s feasible/worthwhile setting it up as a plugin, or grooming it for inclusion in the core code, let me know.