poorman IoC

ioc.php

<?php

class SomeClass {
    public function process($c) {
        if ($c instanceof ClassA) {
            $this->processA($c);
        } elseif ($c instanceof ClassB) {
            $this->processB($c);
        } else {
            // error process
        }
    }
}

class RewriteAsIoC {
    public function process($c) {
        if ($c instanceof NewlyCreatedInterface) {
            $c->processBy($this);
            return;
        }

        // error process
    }
}