Warning: Array to string conversion

To address the “Array to string conversion” warning you’re encountering, I recommend checking a few details to help diagnose the issue effectively:

1. Inspect Variables: Could you check the contents of $header[$i]['handles'] and $header[$i]['versions'] just before the warning triggers? Adding a print_r or var_dump right before the problematic line would help reveal what data is being processed.
2. PHP Version: What version of PHP are you using in your XAMPP environment? Different versions might handle type conversions and errors differently.
3. Recent Modifications: Have there been any recent modifications in your code or updates that could affect these variables?
4. PHP Configuration: Are there any specific settings in your php.ini that might be customized, particularly those related to error reporting?

These steps should help us get closer to understanding and resolving the issue.

As a first step, you can just let me know: What version of PHP are you using in your XAMPP environment? Different versions might handle type conversions and errors differently!

Thank you so much for your prompt and thorough response!

Not sure why but the warning disappeared after I updated some other plugins. I guess it’s some conflicts between plugins. I appreciate your time and effort in providing such valuable insight. ??

I’m glad to hear that the warning has disappeared and your issue was resolved! Plugin conflicts can indeed cause unexpected behaviors, so it’s great that the updates cleared up the problem. Thank you for using WP-Optimize. Have a great day! ??