I get a PHP notice for string to array conversion - help?

This happens when you try to convert an array to a string within your code.

The notice or error will tell you exactly what line this is happening at so you can amend your code accordingly.

It may be that you passed the wrong variable to a function or are not using it correctly for what you want to achieve. Either way this is one of the easier errors to debug and fix to get your code doing what you want it to do.