You need to save a site-wide setting that stores multiple user roles as an array. Which is the best way to store this using the Options API?

hard📝 Application Q8 of 15

Wordpress - Custom Fields and Meta Data

AConvert the array to JSON and save it with add_option('user_roles', json_encode($array)).

BSerialize the array and save it with update_option('user_roles', $array).

CSave each role as a separate option with add_option('user_role_1', 'admin'), etc.

DStore the array as a string separated by commas using update_option('user_roles', implode(',', $array)).

Step-by-Step Solution

Solution:

Step 1: Understand Options API serialization
WordPress automatically serializes arrays and objects when using update_option.
Step 2: Use update_option with array
Passing the array directly to update_option stores it correctly.
Step 3: Other options drawbacks
JSON encoding (B) is unnecessary; separate options (C) complicate retrieval; comma-separated string (D) loses data structure.
Final Answer:
Serialize the array and save it with update_option('user_roles', $array). -> Option B
Quick Check:
update_option auto-serializes arrays [OK]

Quick Trick: update_option auto-serializes arrays and objects [OK]

Common Mistakes:

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