In this blog, we will learn how we can call overridden static functions from the base class If that function is overridden by the derived class.

Lets understand it with an example of problem and solution code –

What’s The Problem ?

Suppose you create two static methods in a class BaseClass.
You have called the first static method getStaticText() from the second static method getStaticResult().

Now a child class DerivedClass extends the BaseClass and override the static method getStaticText().

See the below piece of code to understand it properly –

Now if you call getStaticResult() from DerivedClass –

then the result of var_dump(DerivedClass::getStaticResult()) will be :

“Called from BaseClass“.

The getStaticText() function called from BaseClass as it is called with self keyword.

Case :

You have overrided the getStaticText() method in the DerivedClass.

Also you have called the method from DerivedClass – var_dump(DerivedClass::getStaticResult());

Here Let’s suppose you want, if any method is overridden in the child class then it must be called from the child class. If calling class is child class (DerivedClass).

In the above code I want getStaticText() must be called from DerivedClass.

• You may say call DerivedClass::getStaticText(); in place of self::getStaticText(); in BaseClass. But how someone knows while creating BaseClass that which class is going to extend BaseClass.

Then how to achieve this generically?

Solution