Quorra.php

<?php

	class Search {
		public $doc = null;
		public $results = [];
		public $limit = 10;
		public $URL = "";
		public $query = "";

		public function __construct($url) {
			$this->doc = new DomDocument;
			$this->URL = $url;

			// We need to validate our document before refering to the id
			$this->doc->validateOnParse = true;
		}

		public function response() {
			return json_encode($this->results);
		}

		public function search($query) {
			$this->query = urlencode($query);

			return $this->load();
		}

		public function setLimits($limit) {
			$this->limit = $limit;
		}

		public function load() {
			@$this->doc->loadHtml(file_get_contents($this->URL . $this->query));
			return new DOMXPath($this->doc);
		}

		public function searchClass($dom, $classname, $level="", $parent = null) {
			return $dom->query(".//*[contains(concat(' ', normalize-space(@class), ' '), ' $classname ')]" . $level, $parent);
		}
	}

	class QuoraSearch extends Search {

		public $URL = 'https://id.quora.com/search?q=';

		public function __construct() {
			parent::__construct($this->URL);
		}

		public function process($query) {
			$dom = $this->search($query);
			$titles = $this->searchClass($dom, "question_link");
			$descriptions = $this->searchClass($dom, "row content");

			for($item = 0; $item < $titles->length && $item < $this->limit && $item < $descriptions->length; $item++) {
				$title = $titles->item($item);
				$desc = $descriptions->item($item);

				$content_list = $this->searchClass($dom, "truncated_q_text", "", $desc);

				$node = [];

		    	$url = $title->getAttribute("href");

		    	$node['url'] = $url;
		    	$node['title'] = $title->textContent;
		    	$node['description'] = $content_list->length > 0 ? $content_list[0]->textContent: "";

		    	$this->results[] = $node;
			}
		}
	}
?>