PHP somo la 52: Aina za access modifire na zinavyotofautiana.

Access modifier zipo katika makundi makuu matatu ambayo ni:-

1. Public
2. Protected
3. Private

Public hii inaweza kutumiwa popote, protected hii hutumiwa popote ndani ya class husika ama class iliyotokana na class husika, private, hii hutumka ndani ya class husika tu. ili uelewa hapa angalia mfano huu

<?php

class gari {

    public $jina;

    protected $speed;

    private $transition;

}

$toyota = new gari();

$toyota->jina = 'Toyota avalon'; // OK

echo $toyota->jina;

$speed = new gari();

$speed->speed = '180k/h'; // ERROR

echo $speed->speed;

$transition = new gari();

$transition->transition = 'manual'; // ERROR

echo $transition->transition;

?>

Code hizi zina error kwenye speed na transition ni kwa sababu hizo hapo tumezitumia nje ya class gari. Sasa kwa mujibu wa access modifire ili tuweze kui access nje a class lazima iwe public kama ilivyo hapo kwa jina. Lakini speed na transition sio public hivyo hatuwezi kuzitumia nje ya class gari. 

Pia access modifier zinaweza kufanya kazi kwenye function. Tukawa na protected function, private function, public function kawaida function yeyote ambayo haitawekewa access modifier hiyo inakuwa ni public automatic.

<?php

class Gari {

  &n...