PHP - Inheritance and Polymorphism
Which of the following is the correct syntax to type hint a function parameter with a parent class Animal in PHP?
function feed(____ $pet) { /* ... */ }Which of the following is the correct syntax to type hint a function parameter with a parent class Animal in PHP?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Recall PHP type hint syntax
In PHP, the type hint comes before the variable name:Type $variable.Step 2: Apply to the example
For class Animal, the correct syntax isAnimal $pet.Final Answer:
Animal $pet -> Option AQuick Check:
Type hint before variable name = Animal $pet [OK]
Quick Trick: Type hint is class name before variable with $ [OK]
Common Mistakes:
- Placing variable before type hint
- Adding extra keywords like 'class' or 'type'
- Omitting the $ sign on variable
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