Convert A sitemap.xml File To A HTML Sitemap With PHP

13th August 2008 - 6 minutes read time

I have already talked about converting a sitemap.xml file into a urllist.txt file, but what if you want to create a HTML sitemap? If you have a sitemap.xml file then you can use this to spider your site, scrape the contents of each page and populate the HTML file with this information.

The following code does this. For every page it looks for the title tag, the description meta tag and the first h2 tag on the page. These items are then used to construct a segment of HTML for that page.

<?php
$header = '<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>HTML Sitemap</title>
</head>
<body>';
 
set_time_limit(400);
 
$currentElement = '';
$currentLoc = '';
 
$map = "<h1>HTML Sitemap</h1>"."\n";
 
function parsePage($data)
{
 global $map;
 /*
 if you want to trap a certain file extention then use the syntax below...
 stripos($data, ".php")>0
 stripos($data, ".htm")>0
 stripos($data, ".asp")>0
 */
 if ( stripos($data,".pdf") > 0 ) {
  // if the url is a pdf document.
  $map .= '<p><a href="'.$data.'">PDF document.</a></p>'."\n";
  $map .= '<p>A pdf document.</p>'."\n";
 } elseif ( stripos($data, ".txt")>0 ) {
  // if the url is a text document
  $map .= '<p><a href="'.$data.'">Text document.</a></p>'."\n";
  $map .= '<p>A text document.</p>'."\n";
 } else {
  // try to open it anyway...
  // make sure that you can read the file
  if ( $urlh = @fopen($data, 'rb') ) {
   $contents = '';
   //check php version
   if ( phpversion()>5 ) {
    $contents = stream_get_contents($urlh);
   } else {
    while ( !feof($urlh) ) {
     $contents .= fread($urlh, 8192);
    };
   };
 
   // find the title
   preg_match('/(?<=\<[Tt][Ii][Tt][Ll][Ee]\>)\s*?(.*?)\s*?(?=\<\/[Tt][Ii][Tt][Ll][Ee]\>)/U', $contents, $title);
   $title = $title[0];
 
   // find the first h1 tag
   $header = array();
   preg_match('/(?<=\<[Hh]2\>)(.*?)(?=\<\/[Hh]2\>)/U', $contents, $header);
   $header = strip_tags($header[0]);
 
   if ( strlen($title) > 0 && strlen($header) > 0 ) {
    // print the title and h1 tag in combo
    $map .= '<p class="link"><a href="'.str_replace('&','&amp;',$data).'" title="'.(strlen($header)>0?trim($header):trim($title)).'">'.trim($title).(strlen($header)>0?" - ".trim($header):'').'</a></p>'."\n";
   } elseif ( strlen($title) > 0 ) {
    $map .= '<p class="link"><a href="'.str_replace('&','&amp;',$data).'" title="'.trim($title).'">'.trim($title).'</a></p>'."\n";
   } elseif ( strlen($header) > 0 ) {
    $map .= '<p class="link"><a href="'.str_replace('&','&amp;',$data).'" title="'.trim($header).'">'.trim($header).'</a></p>'."\n";
   };
 
   // find description
   preg_match('/(?<=\<[Mm][Ee][Tt][Aa]\s[Nn][Aa][Mm][Ee]\=\"[Dd]escription\" content\=\")(.*?)(?="\s*?\/?\>)/U', $contents, $description);
   $description = $description[0];
 
   // print description
   if ( strlen($description)>0 ) {
    $map .= '<p class="desc">'.trim($description).'</p>'."\n";
   };
   // close the file
   fclose($urlh);
  };
 };
};
 
/////////// XML PARSE FUNCTIONS HERE /////////////
// the start element function
function startElement($xmlParser, $name, $attribs)
{
 global $currentElement;
 $currentElement = $name;
};
 
// the end element function
function endElement($parser, $name)
{
 global $currentElement,$currentLoc;
 if ( $currentElement == 'loc') {
  parsePage($currentLoc);
  $currentLoc = '';
 };
 $currentElement = '';
};
 
// the character data function
function characterData($parser, $data) 
{
 global $currentElement,$currentLoc;
 // if the current element is loc then it will be a url
 if ( $currentElement == 'loc' ) {
  $currentLoc .= $data;
 };
};
 
// create parse object
$xml_parser = xml_parser_create();
// turn off case folding!
xml_parser_set_option($xml_parser, XML_OPTION_CASE_FOLDING, false);
// set start and end element functions
xml_set_element_handler($xml_parser,"startElement", "endElement");
// set character data function
xml_set_character_data_handler($xml_parser, "characterData");
 
// open xml file
if ( !($fp = fopen('sitemap.xml', "r")) ) {
 die("could not open XML input");
};
 
// read the file - print error if something went wrong.
while ( $data = fread($fp,4096) ) {
 if ( !xml_parse($xml_parser, $data,feof($fp)) ) {
  die(sprintf("XML error: %s at line %d",xml_error_string(xml_get_error_code($xml_parser)), xml_get_current_line_number($xml_parser)));
 };
};
 
// close file
fclose($fp);
 
$footer = '</body>
</html>';
 
// write output to a file
$fp = fopen('sitemap.html', "w+");
fwrite($fp,$header.$map.$footer);
fclose($fp);
 
// print output
echo $header.$map.$footer;

This script prints out the sitemap and also saves the sitemap to a file for later use. This is essential as the script can take a long time to run due to all of the page accessing that it has to do.

This script is fairly complicated and has gone through several versions since I first created it so if you find any improvements or bugs then let me know and I will incorporate them.

PHP
sitemap
sitemap.xml

Comments

amazing script! but what is the file it creates so it dosen't have to keep recreating the same sitemap ? I can't seem to find it after I load the html sitemap thanks ! john

Submitted by john on Wed, 07/28/2010 - 13:06

Permalink
The file is called sitemap.html. The write function is on line 137. Although the script is quite old now so I would probably have written it in a different way if I did the same thing now.
Philip Norton

Submitted by giHlZp8M8D on Wed, 07/28/2010 - 20:07

Permalink
This script is incredible, I was wondering if you could help me modify it so that it does a pagination, like http://example.com/sitemap.php?page=1 (After 1000 Links on the Page) = http://example.com/sitemap.php?page=2 etc. is it possible? I checked the whole internet and could not find any, the only things people offer are site scrapers that make a sitemap in xml, i need the reverse xD

Submitted by mikula on Tue, 08/21/2012 - 06:45

Permalink

Add new comment

The content of this field is kept private and will not be shown publicly.
CAPTCHA
2 + 7 =
Solve this simple math problem and enter the result. E.g. for 1+3, enter 4.
This question is for testing whether or not you are a human visitor and to prevent automated spam submissions.

Related Content

Generating Colour Palettes From Images In PHP

4th August 2024

A common web design pattern is to incorporate an image into the design of the page. This creates a tighter integration with the image and the rest of the page.

The main issue in designing a page around the image is that the colours of the page must match the image. Otherwise this creates a dissonance between the image and the styles of the site.

Read more

Validating XML Files With XML Schema Definitions In PHP

21st July 2024

XML is a useful format for configuration, data storage, and transmitting data from one system to another. As a human readable format that can be easily read by machines it quickly gained favor in lots of different systems as a mechanism for data storage.

Read more

Approximating Pi Using A Circle And A Square

26th May 2024

Pi day was a few weeks ago, but I came across this simple approximation of pi recently and decided to put together an example in PHP since it seemed pretty simple.

This approximation of pi centers around a real world example, but we can simulate this using some code.

Read more

Drawing A Parabolic Curve With Straight Lines In PHP

12th May 2024

A parabolic curve is a type of curve where every point is an equal distance from a focal point. There a number of different way to generate this sort of curve using math, but one of the simplest is to use straight lines to create the illusion of the curve.

Read more

Recreating Spotify Wrapped In PHP

17th March 2024

I quite like the end of the year report from Spotify that they call "Wrapped". This is a little application in which they tell you what your favorite artist was and what sort of genres you listened to the most during the year.

Read more