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File: xmlsitemap-documentation.txt

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File: xmlsitemap-documentation.txt
Role: Documentation
Content type: text/plain
Description: This is documentation for sitemap class
Class: Google SiteMap generator
Generate XML sitemaps from page lists
Author: By
Last change:
Date: 15 years ago
Size: 3,487 bytes


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Generating XML Sitemap what support Google, Yahoo and MSN This is a XML Sitemap which is supposed to be processed by search engines like Google, MSN Search and YAHOO.&#8232;&#8232;You can find more information about XML sitemaps on and Google's list of sitemap programs. An submited url for search engines looks like this line of code: Where tag <loc> are web page url what would be indexed by search engine. The <lastmod> tag tells search engines the date when this document was modified. And tag <changefreq> tells search engines about change frequency of document. With <priority> tag we can change the priority for indexing, accepted values are between 0 and 1 (ex: 0.1, 0.6). XML header is: <?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="sitemap.xsl"?><urlset xmlns:xsi="" xsi:schemaLocation="" xmlns=""> So let’s try to generate with PHP this XML file. I will write a class for that. <?php class SiteMap(){ var $file; //file name for xml will be writen. var $pages = array(); //This array will collect all information about Url function SiteMap($_file){ $this->file = $_file; } function addPage($url, $changefreq = 'daily', $priority = 1.0){ $this->pages['url'][] = $url; $this->pages['changefreq'][] = $changefreq; $this->pages['priority'][] = $priority; } function write2file($fname, $string) { @unlink($fname); @file_put_contents($fname, $string); } function getPages() { for ($i = 0; $i < count($this->pages['url']); $i ++){ $str .= ' <url> <loc>'.$this->pages['url'][$i].'</loc> <lastmod>'.date('Y-m-d').'T'.date('H:i:s').'+00:00</lastmod> <changefreq>'.$this->pages['changefreq'][$i].'</changefreq> <priority>'.$this->pages['priority'][$i].'</priority> </url>'; } return $str; } function xmlHeader() { $str = '<?xml version="1.0" encoding="UTF-8"?><?xml-stylesheet type="text/xsl" href="sitemap.xsl"?><urlset xmlns:xsi="" xsi:schemaLocation="" xmlns="">'; return $str; } function xmlFooter() { $str = ' </urlset> '; return $str; } function create() { $str = $this->xmlHeader(); $str .= $this->getPages(); $str .= $this->xmlFooter(); $this->write2file($this->file, $str); die('Done! <a href="sitemap.xml">SiteMap.xml</a>'); } } ?>&#8232; Here is an example how to use this class. $map = new SiteMap(‘sitemap.xml’); $map->addPage(‘’, 'daily', 1); $map->addPage(‘’, 'daily', 0.8); $map->addPage(‘’, 'daily', 0.7); $map->create(); If we have an multiple urls stored into an array so the code will be: $urls = array(); // here are stored our urls. $map = new SiteMap(‘sitemap.xml’); for($i = 0; $i < count($urls); $i ++){ $map->addPage($urls[$i][‘url’], $urls[$i][‘changefreq’], $urls[$i][‘ priority’]); } $map->create(); <url> <loc></loc> <lastmod>2008-11-25T23:24:30+00:00</lastmod> <changefreq>daily</changefreq> <priority>1</priority> </url>