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Snazzy Automatic Sitemap Generation with Images in PHP

Using a few lines of code you can automate the creation of your sitemaps, with images embedded with the following code sample:

Firstly, we need to set-up our main variables, including the server name and the header area of our sitemap file.

These will be contained in $server and $header for simplicity.

$server =
"http://www.yourserver.com/";

$output="";

$xoutput = "\n\n";

Next we'll need a function to get our images with details from our website.



function imagesfromtext($url){

global $server;





if ($url != ""){

$output="";

echo "<h3>".$url."</h3>";

$xmlStr = file_get_contents($url);



if ($xmlStr != NULL){

$doc=new DOMDocument();

$doc->loadHTML($xmlStr);



if ($doc != NULL){

$xml=simplexml_import_dom($doc);

$images=$xml->xpath('//img');



foreach ($images as $img) {

$output.= "<image:image>\n";

$output.=
"<image:loc>".$img['src']."</image:loc>\n";


$output.=
"<image:title>".$img['alt']."</image:title>\n";


$output.= "</image:image>\n";

$total++;

}





}

}

}



return $output;



}

Now, we'll place our webpages in an array, with a page title.



$url[] = "index.html";

$name[] = "Home Page";



$url[] = "contact.html";

$name[] = "Contact Page";



$url[] = "gallery.html";

$name[] = "My Gallery";

After our pages have been added, we'll now want to loop through the array, grabbing the images from it, appending data to our sitemap file for each page.



for ($i=0; $i<count($url); $i++){

$output.= $server.$url[$i]."\n";

$xoutput.=
"<url><loc>".$server.$url[$i]."</loc>\n".imagesfromtext($server.$url[$i])."\n</url>\n";


}



$xoutput.="</urlset>\n";

Finally. We'll need to write all this out to a well named file on our server, in this case, lets call it sitemap.xml



$filename="sitemap.xml";





if (is_writable($filename)) {



if (!$handle = fopen($filename, 'w')) {

exit;

}



if (fwrite($handle, $xoutput) === FALSE) {

exit;

}



fclose($handle);



} else {

echo "File not created, please upload a file called
".$filename;

}

This script should help you out with using googles newer features for sitemaps although some improvements will be useful to add-on, including the following:

Setting up a blocklist of standard images used on every page.
Setting up a cron-job to run the script once every so-often would also help any sitemap related issues. As would using a form of crawler or script to automatically grab the details of each page on your server space.

Download the FULL Script here

Viewed 1284 times since 15 Apr 2010

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