OOP PHP类从一行调用function1（） - > function2（）

Question

I am in a new quandary, and have been trying to work with it, I have gotten nothing but errors but I'm some what determined to learn how to do it, and after a bit of searching looks like it cannot be done the say that I want it to be.

In the class there are two or more functions(each can probably be called separably[sp]):

public function functionOne($some_var){
    some other code to be run;
}
public function functionTwo($some_other_var){
    some other code to be run after functionOne(), not called here;
}

From the caller (model):

$tClass = new TestClass();
$result = tClass->functionOne()->functionTwo();
echo $result;

Is this even possible from php? I know it works in frameworks like Laravel, which is where I learned about it. it would be nice... and so I am asking if I am doing it wrong? or ist it even possible, if it is where can i look for more as google had very very little information on the subject.

Answer 1

This is called fluent interface and will always work as soon as your method is doing

return $this;

Most likely it should be a good practice to make all your setters fluent. I would tend to say the only method that cannot be fluent would be your getters, otherwise, all other methods are perfect fit for a fluent interface.

class calculator {
    private $result = 0;

    public multiplication($number) {
        $this->result *= $number;
        return $this;
    }

    public addition() {
        $this->result += $number;
        return $this;
    }

    /* ... */

    public getResult() {
        return $this->result;
    }
}

Usage:

$calculator = new calculator();
echo $calculator->addition(10)->multiplication(2)->getResult(); // 20