PHPのトレイト

gistfile1.php

<?php
// http://php.net/manual/ja/language.oop5.traits.php

trait Kanikama {
    function eat_kani() { print "eat kanikama"; }
}

class Salad {
    use Kanikama;
    public function eat() { $this->eat_kani(); }
}

$s = new Salad();
$s->eat();