How to declare abstract method in non-abstract class in PHP?

Question

class absclass {
    abstract public function fuc();
}

reports:

PHP Fatal error: Class absclass contains 1 abstract metho

Answer 1

I wanted to use an abstract method within a non-abstract class (normal class?) and found that I could wrap the method's contents in an 'if' statement with get_parent_class() like so:

if (get_parent_class($this) !== false) {

Or, in action (tested in a file on cmd line: php -f "abstract_method_normal_class_test.php"):

Output:
I'm dad
I'm child

PHP get_parent_class() Documentation