Can a class be private in php?
Show Public:When you declare a method (function) or a property (variable) as
Example:
Protected:When you declare a method (function) or a property (variable) as
Outsider members cannot access those variables. "Outsiders" in the sense that they are not object instances of the declared class itself. Example:
The exact error will be this:
Private:When you declare a method (function) or a property (variable) as
Outsider members cannot access those variables. Outsiders in the sense that they are not object instances of the declared class itself and even the classes that inherit the declared class. Example:
The exact error messages will be:
Dissecting the Grandpa Class using ReflectionThis subject is not really out of scope, and I'm adding it here just to prove that
reflection is really powerful. As I had stated in the above three examples, However, with reflection you can do the extra-ordinary by even accessing Well, what is reflection?
PreambleWe have a class named
Let us make them (assign modifiers) The code
Output:
Common Misconceptions:Please do not confuse with the below example. As you can still see, the
Output:
Debugging functions
More resources:
Can we declare private class in PHP?No, there is not a way to do that. In PHP, you typically declare all your class/instance properties above your functions in alphabetical order with self-documenting comments.
How can we access private members of a class in PHP?php use PhpPrivateAccess\MyClass; $class = new MyClass(); // Create a closure from a callable and bind it to MyClass. $closure = \Closure::bind(function (MyClass $class) { return $class->property; }, null, MyClass::class); var_dump($closure($class)); // => string(11) "Im private!"
What is a private function in PHP?The private keyword ensures that the declared property/method can only be accessed within the very class in which it is defined (the advantage of private methods/properties). However, the major drawback of using private (if not used correctly) is that child classes cannot inherit such properties/methods at all.
Can private variables be inherited in PHP?No; since $privattrib is private, Base's version and Derived's version are completely independent.
|