[Solved] What will be the output of this PHP code?function multiply(float $x, float $y) { return $x * $y; } echo multiply(3, 4.5); | PHP

PHP - Functions

What will be the output of this PHP code?

function multiply(float $x, float $y) {
    return $x * $y;
}
echo multiply(3, 4.5);

A13.5

B12

CTypeError

D7.5

Step-by-Step Solution

Solution:

Step 1: Understand parameter types and argument passing
The function expects floats. PHP will convert integer 3 to float 3.0 automatically.
Step 2: Calculate the multiplication
3.0 * 4.5 = 13.5, so the function returns 13.5.
Final Answer:
13.5 -> Option A
Quick Check:
3 * 4.5 = 13.5 [OK]

Quick Trick: PHP auto-converts int to float if declared [OK]

Common Mistakes:

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