Why might duplicate meta keys exist for a post in WordPress, and how does get_post_meta() handle them?

hard📝 Conceptual Q10 of 15

Wordpress - Custom Fields and Meta Data

ADuplicate keys cause data loss; get_post_meta() returns only the first value

BDuplicate keys are not allowed; get_post_meta() returns error if duplicates exist

CWordPress merges duplicate keys automatically; get_post_meta() returns the merged value

DMultiple values can be stored under the same key; get_post_meta() returns all if third parameter is false

Step-by-Step Solution

Solution:

Step 1: Understand WordPress meta storage
WordPress allows multiple meta values under the same key for a post.
Step 2: Behavior of get_post_meta()
It returns all values as an array if third parameter is false, or single value if true.
Final Answer:
Multiple values can be stored under the same key; get_post_meta() returns all if third parameter is false -> Option D
Quick Check:
Duplicate keys allowed; get_post_meta(false) returns all [OK]

Quick Trick: Duplicate keys store multiple values; get_post_meta(false) returns all [OK]

Common Mistakes:

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