PHPLesson 470 of 901

PHP private Keyword

Use `private` to prevent outside code or derived classes from modifying a property:

reference

Example

Use private to prevent outside code or derived classes from modifying a property:

html

<?php

  class MyClass {
  private $number = 0;

  public function
  add1() {
    $this->number++;
 }

 
  public function getNumber() {
    return $this->number;
 
  }
}

$obj = new MyClass();
$obj->add1();
echo "The number is "
  . $obj->getNumber();

?>

Definition and Usage

The private keyword is an access modifier. It marks a property or method as private.

Private properties and methods can only be used by the class in which the property or method was defined. Derived classes and outside code cannot use them.

The protected keyword

The public keyword