BorderControl

<?php
interface CitizenInterface
{

    public function setId(): void;
}

class Citizen implements CitizenInterface
{
    private $name;
    private $age;
    private $id;

    public function __construct(string $name, int $age, string $id)
    {
        $this->name = $name;
        $this->age = $age;
        $this->id = $id;
    }

    public function getName(): string
    {
        return $this->name;
    }

    public function setName(string $name): void
    {
        $this->name = $name;
    }

    public function getAge(): int
    {
        return $this->age;
    }

    public function setAge(int $age): void
    {
        $this->age = $age;
    }

    public function getId(): string
    {
        return $this->id;
    }

    public function setId(): void
    {
        $this->setId();
    }
}

class Robot implements CitizenInterface
{
    private $model;
    private $id;

    public function __construct(string $model, string $id)
    {
        $this->model = $model;
        $this->id = $id;
    }

    public function getModel(): string
    {
        return $this->model;
    }

    public function getId(): string
    {
        return $this->id;
    }
    public function setId(): void
    {
        $this->setId();
    }
}

class Main
{
    private $citizens;

    public function run()
    {
        $this->readData();
    }

    const PATTERN = '/\s+/';

    public function readData()
    {
        $line = readline();
        while ($line != "End") {
            $input = preg_split(self::PATTERN, $line, -1);
            if (count($input) == 3) {
                $name = $input[0];
                $age = $input[1];
                $id = $input[2];
                $this->citizens[] = new Citizen($name, $age, $id);
            } elseif (count($input) == 2) {
                $model = $input[0];
                $id = $input[1];
                $this->citizens[] = new Robot($model, $id);
            }
            $line = readline();
        }
        $line = readline();
        $str = "";
        foreach ($this->citizens as $citizen) {
            if ($this->endsWith($citizen->getId(), $line)) {
                $str .= $citizen->getId() . "\n";
            }
        }
        echo trim($str, "\n");
        // print_r($this->citizen);
    }

    public function endsWith($haystack, $needle)
    {
        $length = strlen($needle);
        if ($length == 0) {
            return true;
        }
        return (substr($haystack, -$length) === $needle);
    }
}

$main = new Main();
$main->run();