Adding Parameters after creating an object OOP PHP

Question

REVISED

I have a simple question, but being new to OOP I am not sure if this is possible.

Currently I have a class with one function that accepts an argument. What the actual function does is irrelevant.

<?php
class Method {

    public function show($parameter){
        echo $parameter;
    }

}
?>

I create the object like this...

$this->Method = new Method();

And use it like this...

$this->Method->show($parameter);

So the question is, can my function be set up in a way to simplify the use to this...

$this->Method($parameter);

I tried by changing the function to a __construct and using the above line of code but it fails since the new Method() was created without a $parameter specified.

I was hoping to be able to pass the $parameter after the new Method(); was called.

Well, it potentially can do something, but I'm just not certain what you had in mind. If you want it to be callable, you can give it an __invoke method, but I don't know if that's what you intended. — Don't Panic
– Don't Panic, Commented Aug 20, 2015 at 23:47

Don't Panic · Accepted Answer · 2015-08-21 15:37:28Z

2

Yes, you can do this. If you add an __invoke() method to your class, instances of that class can be called like you would a method.

class Method {
    public function __invoke($param) {
        echo $param;
    }
}

Then you can use it in your class the way you want to

$this->Method = new Method;
$this->Method('something');  // echos something

If you still want to have the show method (or whatever the method actually is) as well, you can leave it there and just call it in __invoke instead.

class Method {
    public function show($param) {
        echo $param;
    }
    public function __invoke($param) {
        $this->show($param);
    }
}

Another possibility, because it looks like you are wanting to be able to use an object like you would use a function, is to define a trait and use it in the object that currently has a Method instead of using a Method class. If you create a trait like:

trait CanUseMethod {
    public function Method ($parameter) {
        echo $parameter;
    }
}

Then in the class that needs to use Method, instead of

$this->Method = new Method;

You can use the trait like this:

class Example {
    use CanUseMethod;
}

Then your Example class will be able to use Method without creating a new object.

answered Aug 21, 2015 at 15:37

Don't Panic

41.9k11 gold badges70 silver badges87 bronze badges

Sign up to request clarification or add additional context in comments.

1 Comment

VIDesignz Over a year ago

Great! I had a feeling there was a magic method I could use. I kept trying within __construct with no luck. Thank you again!

Collectives™ on Stack Overflow

Adding Parameters after creating an object OOP PHP

1 Answer 1

1 Comment

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

1 Comment

Your Answer

Sign up or log in

Post as a guest

Related