The community is working on translating this tutorial into Russian, but it seems that no one has started the translation process for this article yet. If you can help us, then please click "More info".
If you are fluent in Russian, then please help us - just point to any untranslated element inside the article and click the translation button to get started. Or have a look at the current translation status for the Russian language.
If you see a translation that you think looks wrong, then please consult the original article to make sure and then use the vote button to let us know about it.
Please help us by translating the following metadata for the article/chapter, if they are not already translated.
If you are not satisfied with the translation of a specific metadata item, you may vote it down - when it reaches a certain negative threshold, it will be removed. Please only submit an altered translation of a metadata item if you have good reasons to do so!
Visibility is a big part of OOP. It allows you to control where your class members can be accessed from, for instance to prevent a certain variable to be modified from outside the class. The default visibility is public, which means that the class members can be accessed from anywhere. This means that declaring the visibility is optional, since it will just fall back to public if there is no access modifier. For backwards compatibility, the old way of declaring a class variable, where you would prefix the variable name with the "var" keyword (this is from PHP 4 and should not be used anymore) will also default to public visibility.
PHP is pretty simple in this area, because it comes with only 3 different access modifiers: private, protected and public.
Private members can only be accessed from inside the class itself.
Protected members can only be accessed from inside the class it self and its child classes.
Public members can be accessed from anywhere - outside the class, inside the class it self and from child classes.