Wordpress - Custom Fields and Meta Data
What will this code output if the custom field 'rating' does not exist for post 10?
$value = get_post_meta(10, 'rating', true);
echo $value;
What will this code output if the custom field 'rating' does not exist for post 10?
medium📝 component behavior Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Behavior when meta key missing
get_post_meta returns empty string if key not found and single=true.Step 2: Echo output
Echoing empty string outputs nothing visible but no error.Final Answer:
Outputs an empty string -> Option BQuick Check:
Missing key returns empty string with single=true [OK]
Quick Trick: Missing key with true returns empty string, not error [OK]
Common Mistakes:
- Expecting zero or NULL
- Assuming error thrown
- Confusing with array return
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