In my localhost document root:
crawl.html
<html>
<body>
<p>
<form action="welcome.php" method="get">
Site to crawl: <input type="text" name="crawlThis">
<input type="submit">
</form>
</p>
</body>
</html>
welcome.php
<html>
<body>
<?php
include ("crawler.php");
echo $crawl = new Crawler($_GET["crawlThis"]);
$images = $crawl->get("images");
$links = $crawl->get("links");
echo $links;
echo $images;
?>
<br>
</body>
</html>
and crawler.php
<?php
class Crawler {
protected $markup = '';
public function __construct($uri) {
$this->markup = $this->getMarkup($uri);
}
public function getMarkup($uri) {
return file_get_contents($uri);
}
public function get($type) {
$method = "_get_{$type}";
if (method_exists($this, $method)){
return call_user_method($method, $this);
}
}
protected function _get_images() {
if (!empty($this->markup)){
preg_match_all('/<img([^>]+)\/>/i', $this->markup, $images);
return !empty($images[1]) ? $images[1] : FALSE;
}
}
protected function _get_links() {
if (!empty($this->markup)){
preg_match_all('/<a([^>]+)\>(.*?)\<\/a\>/i', $this->markup, $links);
return !empty($links[1]) ? $links[1] : FALSE;
}
}
}
/*$crawl = new Crawler($);
$images = $crawl->get('images');
$links = $crawl->get('links');*/
?>
Result page is just empty. Can't figure out if I just can't echo $images, or if my logic is wrong. I'm expecting a list of images, and then a list of links.
Also, do I have to include crawler.php or will php search its container directory for a class of the same name?
Sorry, coming to PHP from Java is a bit of a mindscrew.
