I tried debug plugins for WordPress, but they only show the current page SQL queries. How to debug if update_option returns false?

I am updating an object decoded from AJAX request with json_decode although I doubt it has anything to do with it.

I tried debug plugins for WordPress, but they only show the current page SQL queries. How to debug if update_option returns false?

I am updating an object decoded from AJAX request with json_decode although I doubt it has anything to do with it.

• mysql
• sql
• json
• options

Share Improve this question edited Jan 13, 2019 at 22:20 butlerblog 5,13133 gold badges2828 silver badges4444 bronze badges asked Jan 13, 2019 at 16:10 AurimasAurimas 10133 bronze badges 2

• 3 it would be helpful to see code, something we can test, or anything.... – Milo Commented Jan 13, 2019 at 16:18
• 1 Can you add the code where you register your ajax request handlers, the ajax function code and also the script where you actually call the action function. – Cyclonecode Commented Jan 13, 2019 at 17:49

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I found out that my settings where filtered by validation function registered by register_setting. Somehow I thought that it would only affect settings that where going through wordpress's own settings fields and not a custom AJAX function (the way I have it setup).

To the point of the question: I used php exit to debug the AJAX. update_option returned false because the options fields where the same after validation (I was missing out one particular setting)