krak/invoke

Invocation Utility

Invoke

Simple abstractions for invoking functions with parameters., _(*1)

Installation

Install with composer at krak/invoke, _(*2)

Usage

Each invoker implements the simple interface:, _(*3)

<?php

interface Invoke {
    public function invoke($func, ...$args);
}

Here's a simple example of the default invoker which uses call_user_func., _(*4)

<?php

use Krak\Invoke;

function hello($arg) {
    echo "Hello {$arg}\n";
}

$invoke = new Invoke\CallableInvoke();
$invoke->invoke('hello', 'World');

Container Invoke

<?php

// some psr container
$container['service'] = function() {};
$invoke = Invoke\ContainerInvoke::create($container);
$invoke->invoke('service'); // will invoke the function returned from the container
$invoke->invoke('str_repeat', 'a', 10); // if not in container, will try to normally invoke

Container with Separator

In addition to just invoking services, you can invoke service object methods if you pass in a separator into the container factory method., _(*5)

<?php

$container['service'] = function() { return new ArrayObject([1]); };
$invoke = Invoke\ContainerInvoke::createWithSeparator($container, '@');
$invoke->invoke('service@count'); // retrieves the service and invokes the count method which outputs 1 in this case

Method Invoke

<?php

// this will invoke any object with the append method
$invoke = Invoke\MethodInvoke::create('append');

$data = new ArrayObject();
$invoke->invoke($data, 1);
$invoke->invoke($data, 2);
assert(count($data) == 2);