[PHP]Access Modifiers

a;
    echo $this->b;
    echo $this->c;
  }

  public function hello_everyone() {
    return "Hello everyone.
";
  }
  protected function hello_family() {
    return "Hello family.
";
  }
  private function hello_me() {
    return "Hello me.
";
  }
  //public by default
  function hello() {
    $output = $this->hello_everyone();
    $output .= $this->hello_family();
    $output .= $this->hello_me();
    return $output;
  }  

}

$example = new Example();
echo "public a: {$example->a}
";
//echo "protected b: {$example->b}
";
//echo "private c: {$example->c}
";
$example->show_abc();
echo "
";
echo "hello_everyone: {$example->hello_everyone()}
";
//echo "hello_family: {$example->hello_family()}
";
//echo "hello_me: {$example->hello_me()}
";
echo $example->hello();
?>

public a: 1
123
hello_everyone: Hello everyone.

Hello everyone.
Hello family.
Hello me.