Added ability to insert image definitions into sitemap.

Sitemap.php

@@ -6,8 +6,8 @@
  * This class used for generating Google Sitemap files
  *
  * @package    Sitemap
- * @author     Osman Üngür <osmanungur@gmail.com>
- * @copyright  2009-2015 Osman Üngür
+ * @author     Osman Ungur <osmanungur@gmail.com>
+ * @copyright  2009-2016 Osman Ungur
  * @license    http://opensource.org/licenses/MIT MIT License
  * @link       http://github.com/o/sitemap-php
  */
@@ -70,15 +70,15 @@ private function getWriter() {
 	/**
 	 * Assigns XMLWriter object instance
 	 *
-	 * @param XMLWriter $writer 
+	 * @param XMLWriter $writer
 	 */
 	private function setWriter(XMLWriter $writer) {
 		$this->writer = $writer;
 	}
 
 	/**
 	 * Returns path of sitemaps
-	 * 
+	 *
 	 * @return string
 	 */
 	private function getPath() {
@@ -87,7 +87,7 @@ private function getPath() {
 
 	/**
 	 * Sets paths of sitemaps
-	 * 
+	 *
 	 * @param string $path
 	 * @return Sitemap
 	 */
@@ -98,7 +98,7 @@ public function setPath($path) {
 
 	/**
 	 * Returns filename of sitemap file
-	 * 
+	 *
 	 * @return string
 	 */
 	private function getFilename() {
@@ -107,7 +107,7 @@ private function getFilename() {
 
 	/**
 	 * Sets filename of sitemap file
-	 * 
+	 *
 	 * @param string $filename
 	 * @return Sitemap
 	 */
@@ -127,7 +127,7 @@ private function getCurrentItem() {
 
 	/**
 	 * Increases item counter
-	 * 
+	 *
 	 */
 	private function incCurrentItem() {
 		$this->current_item = $this->current_item + 1;
@@ -144,15 +144,15 @@ private function getCurrentSitemap() {
 
 	/**
 	 * Increases sitemap file count
-	 * 
+	 *
 	 */
 	private function incCurrentSitemap() {
 		$this->current_sitemap = $this->current_sitemap + 1;
 	}
 
 	/**
 	 * Prepares sitemap XML document
-	 * 
+	 *
 	 */
 	private function startSitemap() {
 		$this->setWriter(new XMLWriter());
@@ -165,18 +165,19 @@ private function startSitemap() {
 		$this->getWriter()->setIndent(true);
 		$this->getWriter()->startElement('urlset');
 		$this->getWriter()->writeAttribute('xmlns', self::SCHEMA);
+		$this->getWriter()->writeAttribute('xmlns:image', 'http://www.google.com/schemas/sitemap-image/1.1');
 	}
 
 	/**
 	 * Adds an item to sitemap
 	 *
-	 * @param string $loc URL of the page. This value must be less than 2,048 characters. 
+	 * @param string $loc URL of the page. This value must be less than 2,048 characters.
 	 * @param string $priority The priority of this URL relative to other URLs on your site. Valid values range from 0.0 to 1.0.
 	 * @param string $changefreq How frequently the page is likely to change. Valid values are always, hourly, daily, weekly, monthly, yearly and never.
 	 * @param string|int $lastmod The date of last modification of url. Unix timestamp or any English textual datetime description.
 	 * @return Sitemap
 	 */
-	public function addItem($loc, $priority = self::DEFAULT_PRIORITY, $changefreq = NULL, $lastmod = NULL) {
+	public function addItem($loc, $priority = self::DEFAULT_PRIORITY, $changefreq = NULL, $lastmod = NULL, $images = NULL) {
 		if (($this->getCurrentItem() % self::ITEM_PER_SITEMAP) == 0) {
 			if ($this->getWriter() instanceof XMLWriter) {
 				$this->endSitemap();
@@ -192,6 +193,21 @@ public function addItem($loc, $priority = self::DEFAULT_PRIORITY, $changefreq =
 			$this->getWriter()->writeElement('changefreq', $changefreq);
 		if ($lastmod)
 			$this->getWriter()->writeElement('lastmod', $this->getLastModifiedDate($lastmod));
+		if($images){
+			foreach($images as $image){
+				$this -> getWriter()->startElement('image:image');
+				$this -> getWriter()->writeElement('image:loc', $image['loc']);
+				if(isset($image['caption']))
+					$this -> getWriter()->writeElement('image:caption', $image['caption']);
+				if(isset($image['geo_location']))
+					$this -> getWriter()->writeElement('image:geo_location', $image['geo_location']);
+				if(isset($image['title']))
+					$this -> getWriter()->writeElement('image:title', $image['title']);
+				if(isset($image['license']))
+					$this -> getWriter()->writeElement('image:license', $image['license']);
+				$this -> getWriter()->endElement();
+			}
+		}
 		$this->getWriter()->endElement();
 		return $this;
 	}