在CodeIgniter中扩展父方法

Question

I have a class Parent which has a method calculateRevenue();

I also have a class Child that extends Parent. What I want to do is have the same method name in Child class calculateRevenue(); which would call the method of the Parent class method, and then execute the Child method.

Is this possible? Or the same name will override the method functionality without the ability to call the Parent method?

Answer 1

Yes this is possible.

class Ancestor
{
    public function someMethod()
    {
        return 'foo';
    }
}

class Child extends Ancestor
{
    public function someMethod()
    {
        $results = parent::someMethod();

        return $results . ' bar';
    }
}

$c = new Child;

echo $c->someMethod() . "
";

Output: foo bar

parent manual entry