PHP - Operators
Given an array of mixed types: [0, '0', false, null, ''], which comparison operator will consider all elements equal to 0 when compared individually?
Given an array of mixed types: [0, '0', false, null, ''], which comparison operator will consider all elements equal to 0 when compared individually?
hard📝 Application Q9 of 15
Step-by-Step Solution
Solution:
Step 1: Analyze comparison behavior with 0
Loose equality (==) treats false, null, empty string, and '0' as equal to 0 due to type juggling.Step 2: Understand strict equality behavior
Strict equality (===) requires same type and value, so only integer 0 matches 0.Final Answer:
Loose equality == considers all elements equal to 0 -> Option AQuick Check:
Loose == treats falsy values as equal to 0 [OK]
Quick Trick: == treats falsy values as equal to 0 [OK]
Common Mistakes:
- Assuming === treats all as equal
- Ignoring type juggling
- Confusing != with equality
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