Replace PHP serialized by json encoded for options storage

[bastho]

Serialized objects are tricky to exploit out of PHP, so we often need to convert datas for other languages (mostly JavaScript).

Using json encoding for wp_options and site_options would be a good investment for further usages.

The fist step would be to replace old serialized object and convert them to json or changing maybe_serialized() to detect the current encoding of a string.

[ocean90]

Hello @bastho, welcome to Trac!

This change was already proposed in #23753 so I'm going to close this ticket as a duplicate.

[bastho]

Hi @ocean90 thank you, I could not find the proposal