Polymorphism — PHP Technical Interview Questions & Answers

Polymorphism

Polymorphism

  • Polymorphism is a PHP topic. In plain words you use it for a short Polymorphism example in a college portal page. Don’t start with a slogan — start with that picture.
  • Smallest example: the smallest Polymorphism example you can type. Type it, run it, and say what you see. If you can do that from memory, you know Polymorphism.
  • From the example next to this theory: Polymorphism: scores array, print avg, then high marks.
  • Trap: only saying “Polymorphism” with no example. Fix that before you talk about advanced PHP.
  • Viva: what is Polymorphism? Then show the smallest Polymorphism example you can type. Then name the trap.

Technical Interview Tip: What is Polymorphism? Show this: the smallest Polymorphism example you can type. Trap: only saying “Polymorphism” with no example.

Code Examples for Polymorphism

Polymorphism — working example

<?php
// Polymorphism
$scores = [80, 90, 70];
$avg = array_sum($scores) / count($scores);
echo "avg=" . number_format($avg, 1) . "\n";
foreach ($scores as $s) {
  if ($s >= 80) echo "high: $s\n";
}

Polymorphism: scores array, print avg, then high marks. Say the output.

How to Explain Polymorphism to an Interviewer

What is Polymorphism?

Used for a short Polymorphism example a college portal page Not just the heading

Give one small example of Polymorphism.

the smallest Polymorphism example you can type Polymorphism: scores array, print avg, then high marks

What mistake do beginners make with Polymorphism?

only saying “Polymorphism” with no example Show the fix

Where do you use Polymorphism?

a college portal page a short Polymorphism example