What will this PHP code output?

medium📝 Predict Output Q5 of 15

PHP - Variables and Data Types

$var1 = 10;
$Var1 = 20;
echo $var1 + $Var1;

AError: Undefined variable

B30

C10

D20

Step-by-Step Solution

Solution:

Step 1: Recognize variable case sensitivity
$var1 and $Var1 are different variables with values 10 and 20 respectively.
Step 2: Calculate the sum
Adding 10 + 20 equals 30, which is printed.
Final Answer:
The output is 30. -> Option B
Quick Check:
Case sensitive variables add separately = D [OK]

Quick Trick: Variables with different cases are distinct in PHP [OK]

Common Mistakes:

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