php-spidervsspidr

MIT 1 3 1,341

53 (month) Mar 16 2013 v0.7.6(2025-12-04 15:08:06 ago)

835 2 16 MIT

Jul 25 2009 2.4 thousand (month) 0.7.2(2025-02-03 07:58:27 ago)

php-spider is a PHP library for web crawling and scraping. It allows developers to easily navigate and extract data from websites by simulating a web browser's behavior.

supports two traversal algorithms: breadth-first and depth-first
supports crawl depth limiting, queue size limiting and max downloads limiting
supports adding custom URI discovery logic, based on XPath, CSS selectors, or plain old PHP
comes with a useful set of URI filters, such as Domain limiting
supports custom URI filters, both prefetch (URI) and postfetch (Resource content)
supports custom request handling logic
supports Basic, Digest and NTLM HTTP authentication. See example.
comes with a useful set of persistence handlers (memory, file)
supports custom persistence handlers
collects statistics about the crawl for reporting
dispatches useful events, allowing developers to add even more custom behavior
supports a politeness policy

This Spider does not support Javascript.

Spidr is a Ruby gem that provides a simple and flexible way to spider and scrape websites. It allows you to easily navigate through a website, following links and scraping data as you go. It is built on top of Nokogiri, a popular Ruby gem for parsing and searching HTML and XML documents, and it provides a simple and intuitive API for defining and running web scraping operations.

One of the main features of Spidr is its ability to spider a website, following all the links on a page and visiting all the pages of a website. This allows you to easily and quickly scrape large amounts of data from a website, without having to manually specify which pages to visit.

In addition to its spidering capabilities, Spidr also provides a variety of other features that can simplify the web scraping process. It can automatically filter which links to follow and which pages to visit, it can handle cookies and authentication, and it can automatically store the scraped data in a database or file. It also provides a built-in support for parallelism and queueing to speed up the scraping process.

Example Use

```php use Example\StatsHandler; use VDB\Spider\Discoverer\XPathExpressionDiscoverer; use Symfony\Contracts\EventDispatcher\Event; use VDB\Spider\Event\SpiderEvents; use VDB\Spider\Spider; require_once('example_complex_bootstrap.php'); // Create Spider $spider = new Spider('http://dmoztools.net'); // Add a URI discoverer. Without it, the spider does nothing. In this case, we want tags from a certain

$spider->getDiscovererSet()->set(new XPathExpressionDiscoverer("//div[@id='catalogs']//a")); // Set some sane options for this example. In this case, we only get the first 10 items from the start page. $spider->getDiscovererSet()->maxDepth = 1; $spider->getQueueManager()->maxQueueSize = 10; // Let's add something to enable us to stop the script $spider->getDispatcher()->addListener( SpiderEvents::SPIDER_CRAWL_USER_STOPPED, function (Event $event) { echo "\nCrawl aborted by user.\n"; exit(); } ); // Add a listener to collect stats to the Spider and the QueueMananger. // There are more components that dispatch events you can use. $statsHandler = new StatsHandler(); $spider->getQueueManager()->getDispatcher()->addSubscriber($statsHandler); $spider->getDispatcher()->addSubscriber($statsHandler); // Execute crawl $spider->crawl(); // Build a report echo "\n ENQUEUED: " . count($statsHandler->getQueued()); echo "\n SKIPPED: " . count($statsHandler->getFiltered()); echo "\n FAILED: " . count($statsHandler->getFailed()); echo "\n PERSISTED: " . count($statsHandler->getPersisted()); // Finally we could do some processing on the downloaded resources // In this example, we will echo the title of all resources echo "\n\nDOWNLOADED RESOURCES: "; foreach ($spider->getDownloader()->getPersistenceHandler() as $resource) { echo "\n - " . $resource->getCrawler()->filterXpath('//title')->text(); } ```

```ruby require 'spidr' Spidr.start_at("http://example.com") do |spider| spider.every_page do |page| puts "Visiting: #{page.url}" # Extract data from the page using Nokogiri doc = Nokogiri::HTML(page.body) title = doc.css("title").text puts "Title: #{title}" end end ```

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