PHP-de OOP-de miras almakda hususy usullar

Hususy usullar miras alynmaýar. Bu inkapsulýasiýany bozmazlyk üçin ýörite edilendir. Geliň, mysal üsti bilen göreli. Bizde aşakdaky ata klas, onuň hususy usuly bilen, bolsun:

<?php
	class User {
		private $name;
		
		public function setName($name) {
			$this->name = $name;
		}
		public function getName() {
			return $this->capeFirst($this->name);
		}
		
		private function capeFirst($str) {
			return ucfirst($str);
		}
	}
?>

Ata klasdan aşakdaky klas miras alsyn:

<?php
	class Student extends User {
		private $surn;
		
		public function setSurn($surn) {
			$this->surn = $surn;
		}
		public function getSurn() {
			return $this->surn;
		}
	}
?>

Döwür atanyň hususy usulyny ulanmak islesin. PHP muna rugsat bermez we ýalňyşlyk çykarar:

<?php
	class Student extends User {
		private $surn;
		
		public function setSurn($surn) {
			$this->surn = $surn;
		}
		public function getSurn() {
			return $this->capeFirst($this->surn); // ýalňyşlyk bolar
		}
	}
?>

Employee klasynda atanyň hususy usulyny ulanmaga synanyşyň.