PHP - Variables and Data Types
What will be the output of the following PHP code?
$a = 0;
$b = (bool)$a;
echo $b ? 'True' : 'False';
What will be the output of the following PHP code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Cast integer 0 to boolean
In PHP, 0 cast to boolean becomes false.Step 2: Evaluate ternary expression
Since $b is false, the ternary outputs 'False'.Final Answer:
The output is 'False'. -> Option BQuick Check:
0 cast to bool = false [OK]
Quick Trick: Integer 0 cast to bool is false [OK]
Common Mistakes:
- Assuming 0 becomes true
- Confusing echo output with boolean value
- Ignoring ternary operator behavior
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