<?php
// Example of Composition
class Engine {
public function start() {
return "Engine started";
}
}
class Car {
private $engine;
public function __construct() {
$this->engine = new Engine();
}
public function start() {
return $this->engine->start();
}
}
// Usage
$myCar = new Car();
echo $myCar->start(); // Outputs: Engine started
?>
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