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   103
 
<?php
 
/**
 * Class representing restaurant
 */
class Restaurant
{
 
    private $url;
    private $name;
    private $xpaths = array();
 
    public function getName()
    {
        return $this->name;
    }
 
    public function getUrl()
    {
        return $this->url;
    }
 
    public function getXpaths()
    {
        return $this->xpaths;
    }
 
    /**
     * @param $name
     * @param $url
     * @param $xpaths
     */
    function __construct($name, $url, $xpaths)
    {
 
        if (empty($url) || empty($xpaths)) {
            throw new InvalidArgumentException("All argument are required");
        }
 
        $this->name = $name;
        $this->url = $url;
 
        if (is_string($xpaths)) {
            $this->xpaths[] = $xpaths;
        } else if (is_array($xpaths)) {
            $this->xpaths = $xpaths;
        } else {
            throw new InvalidArgumentException("Xpaths must be string or array");
        }
    }
 
}
 
 
class Parser {
 
    private $restaurants = array();
 
    function __construct($restaurants)
    {
 
        if (empty($restaurants) || !is_array($restaurants)) {
            throw new InvalidArgumentException("Array argument required");
        }
 
        $this->restaurants = $restaurants;
    }
 
    public function parse()
    {
        foreach ($this->restaurants as $restaurant) {
 
            $source = file_get_contents($restaurant->getUrl());
 
            if ($source === false) {
                throw new RuntimeException("Can't read source address: " . $restaurant->getUrl());
            }
 
            $dom = new DOMDocument();
            @$dom->loadHTML($source);
            $xpath_obj = new DOMXPath($dom);
 
            echo("Restaurant: <a href='{$restaurant->getUrl()}'>" . $restaurant->getName() . "</a><br>\n");
 
            foreach ($restaurant->getXpaths() as $name => $xpath) {
 
                $found = $xpath_obj->query($xpath);
 
                if ($found === false || $found->length === 0) {
                    continue;
                }
 
                echo "<b>$name</b>";
                $exists = false;
                foreach ($found->item(0)->childNodes as $elem) {
 
                    $meal = trim($elem->nodeValue);
                    if (!empty($meal)) {
                        echo("\t<br>$meal\n");
                        $exists = true;
                    }
                }
                if (!$exists) {