PHP · Theory

Difference between Abstract class and Interface

Theory

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Difference between Abstract class and Interface

Difference between Abstract class and Interface 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 Difference between Abstract class and Interface.

From the example next to this theory: Difference between Abstract class and Interface — constructor property promotion keeps simple classes short.

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

Viva — what is Difference between Abstract class and Interface? Then show new Student('Asha', 72). Then name the trap.

Exam tip

What is Difference between Abstract class and Interface? Show this: new Student('Asha', 72). Trap: public everything.

Example

<?php
class User {
  public function __construct(private string $name) {}
  public function hello(): string {
    return "Hello, {$this->name}";
  }
}
echo (new User("Ravi"))->hello();

Difference between Abstract class and Interface — constructor property promotion keeps simple classes short.

Short notes

DefDifference between Abstract class and Interface — class Student in a small OOP file.
Rulenew Student('Asha', 72)
Trappublic everything
Usea small OOP file

PHP · Theory

Difference between Abstract class and Interface

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Theory

63/352

Difference between Abstract class and Interface

Difference between Abstract class and Interface 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 Difference between Abstract class and Interface.

From the example next to this theory: Difference between Abstract class and Interface — constructor property promotion keeps simple classes short.

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

Viva — what is Difference between Abstract class and Interface? Then show new Student('Asha', 72). Then name the trap.

Exam tip

What is Difference between Abstract class and Interface? Show this: new Student('Asha', 72). Trap: public everything.

Example

<?php
class User {
  public function __construct(private string $name) {}
  public function hello(): string {
    return "Hello, {$this->name}";
  }
}
echo (new User("Ravi"))->hello();

Difference between Abstract class and Interface — constructor property promotion keeps simple classes short.

Short notes

DefDifference between Abstract class and Interface — class Student in a small OOP file.
Rulenew Student('Asha', 72)
Trappublic everything
Usea small OOP file

Difference between Abstract class and Interface

Example

Short notes

Questions

Difference between Abstract class and Interface

Example

Short notes

Questions