PHP · Theory

Traits vs Inheritance

Theory

335/352

Traits vs Inheritance

Traits vs Inheritance is a PHP topic. In plain words you use it for class Student in a small OOP file. Don’t start with a slogan — start with that picture.

Smallest example: new Student('Asha', 72). Type it, run it, and say what you see. If you can do that from memory, you know Traits vs Inheritance.

From the example next to this theory — Traits vs Inheritance: scores array, print avg, then high marks.

Trap — public everything. Fix that before you talk about advanced PHP.

Viva — what is Traits vs Inheritance? Then show new Student('Asha', 72). Then name the trap.

Exam tip

What is Traits vs Inheritance? Show this: new Student('Asha', 72). Trap: public everything.

Example

<?php
// Traits vs Inheritance
$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";
}

Traits vs Inheritance: scores array, print avg, then high marks. Say the output.

Short notes

DefTraits vs Inheritance — class Student in a small OOP file.
Rulenew Student('Asha', 72)
Trappublic everything
Usea small OOP file

PHP · Theory

Traits vs Inheritance

← All stacks

Theory

335/352

Traits vs Inheritance

Traits vs Inheritance is a PHP topic. In plain words you use it for class Student in a small OOP file. Don’t start with a slogan — start with that picture.

Smallest example: new Student('Asha', 72). Type it, run it, and say what you see. If you can do that from memory, you know Traits vs Inheritance.

From the example next to this theory — Traits vs Inheritance: scores array, print avg, then high marks.

Trap — public everything. Fix that before you talk about advanced PHP.

Viva — what is Traits vs Inheritance? Then show new Student('Asha', 72). Then name the trap.

Exam tip

What is Traits vs Inheritance? Show this: new Student('Asha', 72). Trap: public everything.

Example

<?php
// Traits vs Inheritance
$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";
}

Traits vs Inheritance: scores array, print avg, then high marks. Say the output.

Short notes

DefTraits vs Inheritance — class Student in a small OOP file.
Rulenew Student('Asha', 72)
Trappublic everything
Usea small OOP file

Traits vs Inheritance

Example

Short notes

Questions

Traits vs Inheritance

Example

Short notes

Questions