Google Site Map PHP Class

Google Site Map Example (All in one PHPClass + Example)

A simple script that uses Google Site Map PHP Class Features

<?php
		// PHP google_sitemap Generator
		if (!class_exists('google_sitemap')) {
			include_once("google_sitemap.class.php");
		}

// these day may be retrieved from DB
		$cats[] = array(
							"loc" => "php-tips.devquickref.com/php-tips.html",
							"changefreq" => "weekly",
							"priority"	=> 0.8,
		);

$cats[] = array(
							"loc" => "perl-tips.devquickref.com/perl-tips.html",
							"changefreq" => "weekly",
							"priority"	=> 0.8,
		);

$site_map_container =& new google_sitemap();

for ( $i=0; $i < count( $cats ); $i++ )
		{
			$value = $cats[ $i ];

$site_map_item =& new google_sitemap_item(
				 $value[ 'loc' ]
				, ""
				, $value[ 'changefreq' ]
				, $value[ 'priority' ]
			);

$site_map_container->add_item( $site_map_item );
		}

header( "Content-type: application/xml; charset=\"".$site_map_container->charset . "\"", true );
		header( 'Pragma: no-cache' );

print $site_map_container->build();

/*
			Output ( console mode ):
			--------------------

X-Powered-By: PHP/4.3.10
			Content-type: application/xml; charset="UTF-8"
			Pragma: no-cache

<?xml version="1.0" encoding="UTF-8"?>
				<urlset xmlns="http://www.google.com/schemas/sitemap/0.84">
					<url>
						<loc>php-tips.devquickref.com/php-tips.html</loc>
						<changefreq>weekly</changefreq>
						<priority>0.8</priority>
					</url>

<url>
						<loc>perl-tips.devquickref.com/perl-tips.html</loc>
						<changefreq>weekly</changefreq>
						<priority>0.8</priority>
					</url>

</urlset>

/* google_sitemap.class.php

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.

-------------------------------------------------------------------------------

/** A class for generating simple google sitemaps
 *@author Svetoslav Marinov <svetoslav.marinov@gmail.com>
 *@copyright 2005
 *@version 0.1
 *@access public
 *@package google_sitemap
 *@link http://devquickref.com
 */
class google_sitemap
{
  var $header = "<\x3Fxml version=\"1.0\" encoding=\"UTF-8\"\x3F>\n\t<urlset xmlns=\"http://www.google.com/schemas/sitemap/0.84\">";
  var $charset = "UTF-8";
  var $footer = "\t</urlset>\n";
  var $items = array();

/** Adds a new item to the channel contents.
   *@param google_sitemap item $new_item
   *@access public
   */
  function add_item($new_item){
    //Make sure $new_item is an 'google_sitemap item' object
    if(!is_a($new_item, "google_sitemap_item")){
      //Stop execution with an error message
      trigger_error("Can't add a non-google_sitemap_item object to the sitemap items array");
    }
    $this->items[] = $new_item;
  }

/** Generates the sitemap XML data based on object properties.
   *@param string $file_name ( optional ) if file name is supplied the XML data is saved in it otherwise returned as a string.
   *@access public
   *@return [void|string]
   */
  function build( $file_name = null )
  {
    $map = $this->header . "\n";

foreach($this->items as $item)
    {
		$item->loc = htmlentities($item->loc, ENT_QUOTES);
      $map .= "\t\t<url>\n\t\t\t<loc>$item->loc</loc>\n";

// lastmod
      if ( !empty( $item->lastmod ) )
      	$map .= "\t\t\t<lastmod>$item->lastmod</lastmod>\n";

// changefreq
      if ( !empty( $item->changefreq ) )
      	$map .= "\t\t\t<changefreq>$item->changefreq</changefreq>\n";

// priority
      if ( !empty( $item->priority ) )
      	$map .= "\t\t\t<priority>$item->priority</priority>\n";

$map .= "\t\t</url>\n\n";
    }

$map .= $this->footer . "\n";

if(!is_null($file_name)){
      $fh = fopen($file_name, 'w');
      fwrite($fh, $map);
      fclose($fh);
    }else{
      return $map;
    }
  }

}

/** A class for storing google_sitemap items and will be added to google_sitemap objects.
 *@author Svetoslav Marinov <svetoslav.marinov@gmail.com>
 *@copyright 2005
 *@access public
 *@package google_sitemap_item
 *@link http://devquickref.com
 *@version 0.1
*/
class google_sitemap_item
{
  /** Assigns constructor parameters to their corresponding object properties.
   *@access public
   *@param string $loc location
   *@param string $lastmod date (optional) format in YYYY-MM-DD or in "ISO 8601" format
   *@param string $changefreq (optional)( always,hourly,daily,weekly,monthly,yearly,never )
   *@param string $priority (optional) current link's priority ( 0.0-1.0 )
   */
  function google_sitemap_item( $loc, $lastmod = '', $changefreq = '', $priority = '' )
  {
    $this->loc = $loc;
    $this->lastmod = $lastmod;
    $this->changefreq = $changefreq;
    $this->priority = $priority;
  }
}