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PHP · Theory

Difference between Abstract class and Interface

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Theory

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Difference between Abstract class and Interface

If you can teach Difference between Abstract class and Interface using class Student, you know it. If you only know the heading, you don’t.

For Difference between Abstract class and Interface, a .php page is in play. Don’t blame it until you have traced class Student.

Difference between Abstract class and Interface exists so Meera can keep class Student correct in a small OOP file.

Meera ships Difference between Abstract class and Interface in a small OOP file. That is the use case worth saying.

Difference between Abstract class and Interface miss: public everything. Fix it before you talk about advanced PHP.

Difference between Abstract class and Interface is not a lonely heading. Meera ties it to class Student.

One breath for Difference between Abstract class and Interface, then class Student, then public everything. Sit down.

Exam tip

For Difference between Abstract class and Interface: definition + a small OOP file + one failure.

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 — Meera uses it for class Student in a small OOP file.
  • RuleDifference between Abstract class and Interface → new Student('Asha', 72).
  • RememberDifference between Abstract class and Interface + a .php page (a small OOP file).
  • UseDifference between Abstract class and Interface in a small OOP file (class Student).
  • TrapDifference between Abstract class and Interface — public everything.
  • ExDifference between Abstract class and Interface → class Student.

Questions

1

Meera asks: why does Difference between Abstract class and Interface exist? Use class Student.

2

Name one PHP screen/job that needs Difference between Abstract class and Interface.

3

Viva: one wrong answer people give for Difference between Abstract class and Interface.

4

Change one input on class Student. Predict the new result.

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