How does PHP handle method signatures when overriding a method in a subclass?

When overriding a method in a subclass in PHP, it is important to maintain the same method signature as the parent class. This means that the overriding method in the subclass should have the same method name, number of parameters, and parameter types as the method being overridden in the parent class. Failure to do so will result in a fatal error due to method signature mismatch.

class ParentClass {
    public function myMethod($param1, $param2) {
        // Parent class method implementation
    }
}

class ChildClass extends ParentClass {
    public function myMethod($param1, $param2) {
        // Child class method implementation
    }
}