CODEWITHSUNDEEP
phpvariadic-functions
marcosh
marcosh

Reputation: 9008

PHP - call __invoke with a variable number of arguments

Is it possible, with some kind of dirty trick possibly, to invoke a class via the __invoke magic method using a variable number of arguments?

I know that in php 5.6 there are variadics, but my version is not there yet...

For a normal class method I could try to do something using the magic method __call and the call_user_func_array function. What about the __invoke magic method?

Upvotes: 3

Views: 3595

Answers (3)

Sergii Bubalo
Sergii Bubalo

Reputation: 11

You can use rest operator:

public function __invoke(...$args)
{
    print_r($args);
}

Upvotes: 1

Technomad
Technomad

Reputation: 317

PHP doesn't seem to mind if you add the arguments to the invoke method.

So this would also work:

<?php

class Invoked
{
    public function __invoke($value, $key)
    {
        var_dump($value, $key);
    }
}

$numbers = range(0, 10);

array_walk($numbers, new Invoked);

Upvotes: 0

Jason McCreary
Jason McCreary

Reputation: 72991

Seems to be possible with func_get_args():

Adjusting the example from the docs:

<?php
class CallableClass
{
    public function __invoke()
    {
        var_dump(func_get_args());
    }
}
$obj = new CallableClass;
$obj(5, 6, 7, 8); // vary arguments to meet your needs

Upvotes: 2

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