PHP - Type Handling
What will be the output of this PHP code?
$arr = ['a' => 0, 'b' => null];
echo empty($arr['a']) ? 'Empty' : 'Not Empty';
What will be the output of this PHP code?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Check value of $arr['a']
$arr['a'] is 0, which empty() treats as empty.Step 2: Evaluate empty() result
empty(0) returns true, so ternary outputs 'Empty'.Final Answer:
Empty -> Option DQuick Check:
empty(0) = true [OK]
Quick Trick: empty() treats 0 as empty [OK]
Common Mistakes:
- Expecting 'Not Empty' for 0
- Confusing empty() with isset()
- Thinking null affects this key
Master "Type Handling" in PHP
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore PHP Quizzes