[Solved] What is wrong with this code?register_taxonomy('genre', ['post'], ['hierarchical' => 'yes']); — Ans: The 'hierarchical' value should be a boolean, not a string | Wordpress

Wordpress - Custom Post Types and Taxonomies

What is wrong with this code?

register_taxonomy('genre', ['post'], ['hierarchical' => 'yes']);

AThe post types should be a string, not an array

BThe 'hierarchical' value should be a boolean, not a string

CThe taxonomy name 'genre' is invalid

DThe function register_taxonomy() does not accept arrays

Step-by-Step Solution

Solution:

Step 1: Check the 'hierarchical' argument type
This argument expects a boolean true or false, but 'yes' is a string.
Step 2: Validate correct argument types
Passing a string instead of boolean can cause unexpected behavior.
Final Answer:
The 'hierarchical' value should be a boolean, not a string -> Option B
Quick Check:
Boolean required for hierarchical argument [OK]

Quick Trick: Use true/false, not 'yes'/'no' for booleans [OK]

Common Mistakes:

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