How to call non-static method from static method of same class?

You must create a new object inside the static method to access not-static methods inside that class:

class Foo {

    public function fun1() {
        echo 'non-static';   
    }

    public static function fun2() {
        echo (new self)->fun1();
    }
}

Reference: https://stackoverflow.com/questions/41631623/how-to-call-non-static-method-from-static-method-of-same-class

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