<?php

class Foo {
    
    public function __construct($name) {
        $this->name = $name;
    }
    
    public function __toString() {
        return "classe Foo";
    }
    
}

function getCategoria() {
    return "categoria";
}

$l1 = new Foo("lutador 1");
$l2 = new Foo("lutador 2");

var_dump($l1.getCategoria() == $l2.getCategoria());