Moving Around an Array

[millsy007]

Hello

 

I have some xml (a sitemap). I pass this into my php code and use the current server url to find the relevant record within the sitemap. I then want to use the array made from the sitemap to find what the next record in the sitemap is and use this for a next link on my page.

 

So I would have:

 

<?php
  $domain = $_SERVER['HTTP_HOST'];
  $path = $_SERVER['SCRIPT_NAME'];
  $currenturl = "http://" . $domain . $path;

include 'sitemap.php';

$xml = new SimpleXMLElement($xmlstr);

foreach ($xml->url as $url) {

   if ((string) $url->loc == $currenturl) {

//TO DO: Go to the next record in the sitemap/array , get this url and set it to = &nexturl

echo 
'<div class="navigation-div"><ul class="navigation"><li class="next">
<a href="', &nexturl ,'">NEXT</a></li>
</li></ul></div>';


}
}
?>

 

<?php
$xmlstr = <<<XML
<?xml version='1.0' standalone='yes'?>
<urlset>
<url>
  <loc>http://www.page.nl/home.php</loc>
  <priority>1.00</priority>
  <changefreq>daily</changefreq>
</url>
<url>
  <loc>http://www.page.nl/about.php</loc>
  <priority>0.80</priority>
  <changefreq>daily</changefreq>
</url>
</urlset>
XML;
?>

 

So for example if the current page was http://www.page.nl/home.php I would want the NEXT link to bet set to http://www.page.nl/about.php

 

Thanks  ???

[rhodesa]

$matched = false;
foreach ($xml->url as $url) {
   if($matched){
      echo 
      '<div class="navigation-div"><ul class="navigation"><li class="next">
      <a href="', &nexturl ,'">NEXT</a></li>
      </li></ul></div>';
      break;
   }
   if ((string) $url->loc == $currenturl) {
      $matched = true;
      continue;
   }
}

[rhodesa]

that should be $url instead of &nexturl

 

...also, this is easier and probably faster:

$xml = new SimpleXMLElement($xmlstr);
$currenturl = 'http://www.page.nl/home.php';
if(list($next) = $xml->xpath("/urlset/url[loc='$currenturl']/following-sibling::url")){
      echo '<div class="navigation-div"><ul class="navigation"><li class="next">
      <a href="'.(string)$next->loc.'">NEXT</a></li>
      </li></ul></div>';
}

[millsy007]

Your a star!

Got it to work for the previous too!

Cheers

[millsy007]

Turns out the previous code I tried didnt do what I thought, it is setting the link to the homepage all the time. I want the link to be the previous url of the current page:

 

                <?php
                $domain = $_SERVER['HTTP_HOST'];
                // find out the path to the current file:
                $path = $_SERVER['SCRIPT_NAME'];
                // put it all together:
                $currenturl = "http://" . $domain . $path;
                
                include '/home/beachh/public_html/sample.php';
                
                $xml = new SimpleXMLElement($xmlstr);
                
                if(list($next) = $xml->xpath("/urlset/url[loc='$currenturl']/following-sibling::url")){
                echo '<li class="next">
                <a href="'.(string)$next->loc.'">NEXT</a>
                </li>';
                }

                if(list($prev) = $xml->xpath("/urlset/url[loc='$currenturl']/preceding-sibling::url")){
                echo '<li class="previous">
                <a href="'.(string)$prev->loc.'">PREV</a></li>';
                }
                ?>	

 

The 'NEXT' works, but the 'PREV' doesnt?