I like to hardcode everything on my WordPress websites, without using any plugins. Is there any way to generate or update my sitemap everytime I publish/update a post on one of my Multisite blogs, without using plugins?
I changed the code from @locutor-antonio-cezar a little bit as I was looking for a very specific use case. I needed a sitemap specially written for Google News. What is different? The whole markup follows the rules. In my specific case, I limited the number of posts to 20. Also posts older than 2 days disappear. Maybe somebody needs this:
/* function to create sitemap.xml file in root directory of site */
// add_action("publish_post", "eg_create_sitemap");
// add_action("publish_page", "eg_create_sitemap");
add_action( "save_post", "eg_create_sitemap" );
function eg_create_sitemap() {
if ( str_replace( '-', '', get_option( 'gmt_offset' ) ) < 10 ) {
$tempo = '-0' . str_replace( '-', '', get_option( 'gmt_offset' ) );
} else {
$tempo = get_option( 'gmt_offset' );
}
if( strlen( $tempo ) == 3 ) { $tempo = $tempo . ':00'; }
$postsForSitemap = get_posts( array(
'numberposts' => 20,
'orderby' => 'modified',
'post_type' => array( 'post', 'page' ),
'order' => 'DESC',
'date_query' => array(
'after' => date('Y-m-d', strtotime('-2 days'))
)
) );
$sitemap .= '<?xml version="1.0" encoding="UTF-8"?>';
$sitemap .= "\n" . '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:news="http://www.google.com/schemas/sitemap-news/0.9" xmlns:xhtml="http://www.w3.org/1999/xhtml" xmlns:mobile="http://www.google.com/schemas/sitemap-mobile/1.0" xmlns:image="http://www.google.com/schemas/sitemap-image/1.1" xmlns:video="http://www.google.com/schemas/sitemap-video/1.1">' . "\n";
foreach( $postsForSitemap as $post ) {
setup_postdata( $post);
$postdate = explode( " ", $post->post_modified );
$sitemap .= "\t" . "<url>" . "\n";
$sitemap .= "\t\t" . "<loc>" . get_permalink( $post->ID ) . '</loc>';
$sitemap .= "\t\t" . '<news:news>' . "\n";
$sitemap .= "\t\t\t" . '<news:publication>' . "\n";
$sitemap .= "\t\t\t\t" . '<news:name><![CDATA[ YOUR SITE ]]></news:name>' . "\n";
$sitemap .= "\t\t\t\t" . '<news:language>YOUR LANGUAGE</news:language>' . "\n";
$sitemap .= "\t\t\t" . '</news:publication>' . "\n";
$sitemap .= "\t\t\t<news:publication_date>" . $postdate[0] . 'T' . $postdate[1] . $tempo . "</news:publication_date>\n";
$sitemap .= "\t\t\t" . '<news:title><![CDATA[' . get_the_title( $post) . ']]></news:title>' . "\n";
$sitemap .= "\t\t" . '</news:news>' . "\n";
$sitemap .= "\t" . '</url>' . "\n";
}
$sitemap .= '</urlset>';
$fp = fopen( ABSPATH . "sitemap_news.xml", 'w' );
fwrite( $fp, $sitemap );
fclose( $fp );
}
The following code works right off the bat. Your sitemap will show up on: https://your-website-name.com/sitemap.xml
Every time you create or update a page, post or custom post type it will show. Make sure to add the name of your custom post type:
add_action( 'publish_post', 'ow_create_sitemap' );
add_action( 'publish_page', 'ow_create_sitemap' );
add_action( 'save_post', 'ow_create_sitemap' );
function ow_create_sitemap() {
$postsForSitemap = get_posts(array(
'numberposts' => -1,
'orderby' => 'modified',
// 'custom_post' should be replaced with your own Custom Post Type (one or many)
'post_type' => array( 'post', 'page', 'custom_post' ),
'order' => 'DESC'
));
$sitemap = '<?xml version="1.0" encoding="UTF-8"?>';
$sitemap .= '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd">';
foreach( $postsForSitemap as $post ) {
setup_postdata( $post );
$postdate = explode( " ", $post->post_modified );
$sitemap .= '<url>'.
'<loc>' . get_permalink( $post->ID ) . '</loc>' .
'<lastmod>' . $postdate[0] . '</lastmod>' .
'<changefreq>monthly</changefreq>' .
'</url>';
}
$sitemap .= '</urlset>';
$fp = fopen( ABSPATH . 'sitemap.xml', 'w' );
fwrite( $fp, $sitemap );
fclose( $fp );
}
I don't know whether this works on multisite, but it is working perfect in a single WordPress installation for me.
When you create/update any posts, or pages, it will generate a sitemap.xml file and update the links (URLs) with the most recent first (last modified).
Copy and paste the below code in your active theme's functions.php file:
/* function to create sitemap.xml file in root directory of site */
// add_action("publish_post", "eg_create_sitemap");
// add_action("publish_page", "eg_create_sitemap");
add_action( "save_post", "eg_create_sitemap" );
function eg_create_sitemap() {
$postsForSitemap = get_posts( array(
'numberposts' => -1,
'orderby' => 'modified',
'post_type' => array( 'post', 'page' ),
'order' => 'DESC'
) );
$sitemap = '<?xml version="1.0" encoding="UTF-8"?>';
$sitemap .= "\n" . '<urlset xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n";
foreach( $postsForSitemap as $post ) {
setup_postdata( $post );
$postdate = explode( " ", $post->post_modified );
$sitemap .= "\t" . '<url>' . "\n" .
"\t\t" . '<loc>' . get_permalink( $post->ID ) . '</loc>' .
"\n\t\t" . '<lastmod>' . $postdate[0] . '</lastmod>' .
"\n\t\t" . '<changefreq>monthly</changefreq>' .
"\n\t" . '</url>' . "\n";
}
$sitemap .= '</urlset>';
$fp = fopen( ABSPATH . "sitemap.xml", 'w' );
fwrite( $fp, $sitemap );
fclose( $fp );
}
Before using the code provided in w3uiguru's answer, I had to make some improvements that follow the accepted standard for XML files. The code is below:
/* function to create sitemap.xml file in root directory of site */
// add_action("publish_post", "eg_create_sitemap");
// add_action("publish_page", "eg_create_sitemap");
add_action( "save_post", "eg_create_sitemap" );
function eg_create_sitemap() {
if ( str_replace( '-', '', get_option( 'gmt_offset' ) ) < 10 ) {
$tempo = '-0' . str_replace( '-', '', get_option( 'gmt_offset' ) );
} else {
$tempo = get_option( 'gmt_offset' );
}
if( strlen( $tempo ) == 3 ) { $tempo = $tempo . ':00'; }
$postsForSitemap = get_posts( array(
'numberposts' => -1,
'orderby' => 'modified',
'post_type' => array( 'post', 'page' ),
'order' => 'DESC'
) );
$sitemap .= '<?xml version="1.0" encoding="UTF-8"?>' . '<?xml-stylesheet type="text/xsl" href="' .
esc_url( home_url( '/' ) ) . 'sitemap.xsl"?>';
$sitemap .= "\n" . '<urlset xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.sitemaps.org/schemas/sitemap/0.9 http://www.sitemaps.org/schemas/sitemap/0.9/sitemap.xsd" xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">' . "\n";
$sitemap .= "\t" . '<url>' . "\n" .
"\t\t" . '<loc>' . esc_url( home_url( '/' ) ) . '</loc>' .
"\n\t\t" . '<lastmod>' . date( "Y-m-d\TH:i:s", current_time( 'timestamp', 0 ) ) . $tempo . '</lastmod>' .
"\n\t\t" . '<changefreq>daily</changefreq>' .
"\n\t\t" . '<priority>1.0</priority>' .
"\n\t" . '</url>' . "\n";
foreach( $postsForSitemap as $post ) {
setup_postdata( $post);
$postdate = explode( " ", $post->post_modified );
$sitemap .= "\t" . '<url>' . "\n" .
"\t\t" . '<loc>' . get_permalink( $post->ID ) . '</loc>' .
"\n\t\t" . '<lastmod>' . $postdate[0] . 'T' . $postdate[1] . $tempo . '</lastmod>' .
"\n\t\t" . '<changefreq>Weekly</changefreq>' .
"\n\t\t" . '<priority>0.5</priority>' .
"\n\t" . '</url>' . "\n";
}
$sitemap .= '</urlset>';
$fp = fopen( ABSPATH . "sitemap.xml", 'w' );
fwrite( $fp, $sitemap );
fclose( $fp );
}
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