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PHP protected Keyword

❮ PHP Keywords

Example

Use protected to prevent outside code from modifying a property:

<?php
class MyClass {
  protected $number = 0;
}

class AnotherClass extends MyClass {
  public function add1() {
    $this->number++;
  }

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

$obj = new AnotherClass();
$obj->add1();
echo "The number is " . $obj->getNumber();
?>
Try it Yourself »

Definition and Usage

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

Protected properties and methods can only be used by the class in which the property or method was defined and any classes that derive from it. Any other code cannot use them.

Related Pages

The private keyword

The public keyword

Learn more about access modifiers in our PHP OOP - Access Modifiers Tutorial.

❮ PHP Keywords