Single Inheritance-example

#1 Person.php

<?php

/* Dependencies.. */

class Person {
  public $sName;
  protected $iAge;
  private $mPhone;
  
  public function talk() { ... }
  
  protected function walk() { ... }
  
  private function swim() { ... }
  
}

#2 John.php

<?php

class John extends Person {
 /*
  Since John is extending the person-class, this mean that John becomes a child-class.
  And this mean that John will inherit all public and protected properties and methods from the parent-class( Person.php)

  So John will have the following props and methods:
  
  public $sName;
  protected $iAge;
  public function talk(){}
  protected function walk(){}

  This will not inherit the private props and methods.

 */ 
}