(PHP Extension) Getting Started Spidering a Site

This is a very simple "getting started" example for spidering a web site. As you'll see in future examples, the Chilkat Spider library can be used to crawl the Web. For now, we'll concentrate on spidering a single site.

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<?php

// The version number (9_5_0) should match version of the Chilkat extension used, omitting the micro-version number.
// For example, if using Chilkat v9.5.0.48, then include as shown here:
include("chilkat_9_5_0.php");

$spider = new CkSpider();

// The spider object crawls a single web site at a time.  As you'll see
// in later examples, you can collect outbound links and use them to 
// crawl the web.  For now, we'll simply spider 10 pages of chilkatsoft.com
$spider->Initialize('www.chilkatsoft.com');

// Add the 1st URL:
$spider->AddUnspidered('http://www.chilkatsoft.com/');

// Begin crawling the site by calling CrawlNext repeatedly.

for ($i = 0; $i <= 9; $i++) {

    $success = $spider->CrawlNext();
    if ($success == true) {
        // Show the URL of the page just spidered.
        print $spider->lastUrl() . "\n";
        // The HTML is available in the LastHtml property
    }
    else {
        // Did we get an error or are there no more URLs to crawl?
        if ($spider->get_NumUnspidered() == 0) {
            print 'No more URLs to spider' . "\n";
        }
        else {
            print $spider->lastErrorText() . "\n";
        }

    }

    // Sleep 1 second before spidering the next URL.
    $spider->SleepMs(1000);
}


?>