Which of the following function declarations correctly enforces a parameter to be a float in PHP?

easy📝 Syntax Q3 of 15

PHP - Functions

Afunction calc(float $num) {}

Bfunction calc(Float $num) {}

Cfunction calc(number $num) {}

Dfunction calc(decimal $num) {}

Step-by-Step Solution

Solution:

Step 1: Check PHP type names
PHP uses lowercase 'float' as a scalar type declaration.
Step 2: Validate each option
'Float' with uppercase is invalid, 'number' and 'decimal' are not PHP types.
Final Answer:
function calc(float $num) {} -> Option A
Quick Check:
Correct float type declaration = float [OK]

Quick Trick: Use lowercase scalar types like int, float, string [OK]

Common Mistakes:

Master "Functions" in PHP

9 interactive learning modes - each teaches the same concept differently

Want More Practice?

15+ quiz questions · All difficulty levels · Free

More PHP Quizzes