PHP - Type Handling
Which of the following PHP expressions correctly adds a boolean true to an integer 2 and returns 3?
Which of the following PHP expressions correctly adds a boolean true to an integer 2 and returns 3?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Understand boolean to integer conversion
In PHP, boolean true converts to integer 1 in arithmetic operations.Step 2: Evaluate each option
(int)'true' + 2: (int)'true' is 0 + 2 = 2 (wrong).'true' + 2: 'true' converts to 0 + 2 = 2 (wrong).true . 2: concatenation '12' (wrong).true + 2: 1 + 2 = 3 (correct).Final Answer:
true + 2 -> Option BQuick Check:
true + 2 = 3 [OK]
Quick Trick: Boolean true acts as 1 in math operations [OK]
Common Mistakes:
- Confusing string 'true' with boolean true
- Using concatenation instead of addition
- Not knowing boolean converts to 1 or 0
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